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Objective: The aim of our study is to describe the progression-free survival (PFS) in patients with clinical stage (CS) II and III NSGCT with an RM after primary or secondary CT with negative serum markers (NSM). A residual mass (RM) in non-seminomatous germ cell tumors (NSGCT) after chemotherapy (CT) is defined as a mass >1 cm in greatest diameter. The preferred treatment for RM is retroperitoneal lymph node dissection (RPLND), with a cure rate greater than 80%. Methods: We identified 60 patients with NSGCT, RM, and NSM between 2007 and 2020. Data regarding clinical and oncological outcomes as well as pathological information were obtained in a retrospective fashion from our electronic database. Results: A total of 60 patients were included. 50% of cases were CS II, and 50% CS III. About 90% of the patients had undergone RPLND. Teratoma was found in 73.6% of these patients. PFS and OS were better in CS II patients, compared to CS III. The patients treated with observation were found to have a shorter PFS compared to patients who underwent RPLND. Patients with viable tumors after RPLND had shorter OS compared to patients with teratoma and fibrosis. Conclusions: RPLND continues to be the treatment of choice to patients with RM after CT and NSM

Objetivo: Nuestro objetivo es describir la supervivencia libre de progresión (SLP) en pacientes con TCGNS en estadio clínico (CS) II y III con masa residual tras QT primaria o secundaria con marcadores séricos negativos (MSN). Métodos: Se incluyeron pacientes con TCGNS, MR y MSN atendidos entre 2007-2020. Los datos se obtuvieron de forma retrospectiva de nuestra base de datos electrónica. Resultados: Se identificaron 60 pacientes, el 50% eran CS II y el 50% CS III, y el 90% de los pacientes fueron sometidos a DGLRP. Se evidenció teratoma en el 73,6% de los pacientes. La SLP y la supervivencia global (SG) fue mejor en pacientes con CS II, frente a CS III. Los pacientes observados tuvieron una SLP menor frente a los que se sometieron a DGLRP. Los pacientes tratados con DGLRP y evidencia de tumor viable en la patología tenían una SG más corta comparado con teratomay fibrosis. Conclusión: La DGLRP sigue siendo el tratamiento de elección para las MR posterior a QT y MSN.

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Objetivo: Describir las características clínicas y patológicas de los pacientes con tumor germinal testicular tipo seminoma con masa residual posquimioterapia (post-QT) con marcadores tumorales negativos llevados a linfadenectomía retroperitoneal (LRP). Método: Se incluyeron pacientes con TGTS y masa residual post-QT entre el año 2007-2021 en nuestra institución. Los datos fueron obtenidos mediante la evaluación retrospectiva de nuestra base de datos electrónica. Resultados: Nueve pacientes cumplieron con los criterios de inclusión. Según la estadificación del TNM, seis pacientes eran pT1, mientras que tres (33,3%) eran N2 y N3. La mayoría de los pacientes, cinco en total, tenían un estadio clínico IIC y todos los pacientes se clasificaron como riesgo bueno según la clasificación del International Germ Cell Cancer Collaborative Group (IGCCCG). Se observaron cinco pacientes, tres fueron intervenidos con LRP y solo uno recibió QT. Solo en dos pacientes llevados a LRP se logró una resección completa de la masa y se encontró tumor viable en el 66,6% de los pacientes llevados a cirugía. Conclusión: En nuestra experiencia la LRP es viable en este tipo de pacientes, logrando la resección completa en la mayoría de los casos. Cuando no se logra una resección completa es imprescindible ofrecer tratamientos adicionales

Objective: We aim to describe the clinical and pathological characteristics of patients with seminomatous germ cell tumour (SGCT) and residual masses following chemotherapy (CTX) with negative tumor markers taken to retroperitoneal lymph node dissection (RLND). Method: We included patients with SGCT and had a residual mass after CTX between 2007 and 2021 in our institution. Data was obtained in a retrospective fashion from our electronic database. Results: A total of 9 patients match the inclusion criteria. Above 66% of patients were Pt1, most of them were N2 (33.3%) and N3 (33.3%), 55.5% had a IIC clinical stage and all the patients had good risk following the International Germ Cell Cancer Collaborative Group (IGCCCG) classification. The majority of the patients were observed (55.5%), 33.3% were taken to RLND and one patient received CTX. Almost 66.6% of the patients taken to RLND had a complete resection of the mass and had viable tumor in 66.6% of the cases. Conclusions: In our retrospective study the RLND is a good option for these patients and allows a complete resection in most of the cases. When a complete resection is not possible is necessary to offer additional treatments

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ABSTRACT Background: Information is needed on the safety and efficacy of direct discharge from the emergency department (ED) of patients with COVID-19 pneumonia. Objectives: The objectives of the study were to study the variables associated with discharge from the ED in patients presenting with COVID-19 pneumonia, and study ED revisits related to COVID-19 at 30 days (EDR30d). Methods: Multicenter study of the SIESTA cohort including 1198 randomly selected COVID patients in 61 EDs of Spanish medical centers from March 1, 2020, to April 30, 2020. We collected baseline and related characteristics of the acute episode and calculated the adjusted odds ratios (aOR) for ED discharge. In addition, we analyzed the variables related to EDR30d in discharged patients. Results: We analyzed 859 patients presenting with COVID-19 pneumonia, 84 (9.8%) of whom were discharged from the ED. The variables independently associated with discharge were being a woman (aOR 1.890; 95%CI 1.176-3.037), age < 60 years (aOR 2.324; 95%CI 1.353-3.990), and lymphocyte count > 1200/mm3 (aOR 4.667; 95%CI 1.045-20.839). The EDR30d of the ED discharged group was 40.0%, being lower in women (aOR 0.368; 95%CI 0.142-0.953). A total of 130 hospitalized patients died (16.8%) as did two in the group discharged from the ED (2.4%) (OR 0.121; 95%CI 0.029-0.498). Conclusion: Discharge from the ED in patients with COVID-19 pneumonia was infrequent and was associated with few variables of the episode. The EDR30d was high, albeit with a low mortality.

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BACKGROUND: Information is needed on the safety and efficacy of direct discharge from the emergency department (ED) of patients with COVID-19 pneumonia. OBJECTIVES: The objectives of the study were to study the variables associated with discharge from the ED in patients presenting with COVID-19 pneumonia, and study ED revisits related to COVID-19 at 30 days (EDR30d). METHODS: Multicenter study of the SIESTA cohort including 1198 randomly selected COVID patients in 61 EDs of Spanish medical centers from March 1, 2020, to April 30, 2020. We collected baseline and related characteristics of the acute episode and calculated the adjusted odds ratios (aOR) for ED discharge. In addition, we analyzed the variables related to EDR30d in discharged patients. RESULTS: We analyzed 859 patients presenting with COVID-19 pneumonia, 84 (9.8%) of whom weredischarged from the ED. The variables independently associated with discharge were being a woman (aOR 1.890; 95%CI 1.176 3.037), age < 60 years (aOR 2.324; 95%CI 1.353-3.990), and lymphocyte count > 1200/mm3 (aOR 4.667; 95%CI 1.045-20.839). The EDR30d of the ED discharged group was 40.0%, being lower in women (aOR 0.368; 95%CI 0.142-0.953). A totalof 130 hospitalized patients died (16.8%) as did two in the group discharged from the ED (2.4%) (OR 0.121; 95%CI 0.029-0.498). CONCLUSION: Discharge from the ED in patients with COVID-19 pneumonia was infrequent and was associated with few variables of the episode. The EDR30d was high, albeit with a low mortality.

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Fossil plants from the Lower Cretaceous (upper Aptian) of the La Cantera Formation, Argentina, are described. The fossils studied represent a leafy shooting system with several orders of articulated and striated axes and attached leaves with unequivocal ephedroid affinity. We also found associated remains of ovulate cones with four whorls of sterile bracts, which contain two female reproductive units (FRU). Ovulate cone characters fit well within the genus Ephedra. Special characters in the ovulate cones including an outer seed envelope with two types of trichomes, allowed us to consider our remains as a new Ephedra species. Abundant dispersed ephedroid pollen obtained from the macrofossil-bearing strata also confirms the abundance of Ephedraceae in the basin. The co-occurrence of abundant fossil of Ephedra (adapted to dry habitats) associated with thermophilic cheirolepideacean conifer pollen (Classopollis) in the unit would suggest marked seasonality at the locality during the Early Cretaceous. Furthermore, the floristic association is linked to dry sensitive rocks in the entire section. The macro- and microflora from San Luis Basin are similar in composition to several Early Cretaceous floras from the Northern Gondwana floristic province, but it may represent one of the southernmost records of an arid biome in South America.

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BACKGROUND: Early initiation of injection drug use (IDU) increases the risk of HIV infection. METHODS: We compare the sociodemographic, psychosocial, and clinical profiles of HIV-positive IDU patients according to the age at which IDU was initiated. This is a cross-sectional study of 1308 patients seen from 1992 through 2005. We compared the profile of patients with early (age < 13 years) vs non-early (age > 13 years) initiation of IDU. The Fisher and chi2 differences in proportions were performed to assess difference among study groups with earlier IDU. The Mantel-Haenszel test was used to calculate the odds ratio. The Kaplan-Meier and log rank tests were used to assess the median survival. Differences were considered significant at alpha = .05. RESULTS: Early initiation of IDU was reported in 11% of our sample. The early initiation group was more likely to smoke tobacco, use alcohol, attempt suicide, have a history of incarceration, have economic problems, and have episodes of anxiety, confusion, depression, excitation, impulsivity, and violence (P < .05). The general survival time of patients was 36.9 months (95% confidence interval 31.9-42.0). A higher prevalence of candidial esophagitis and Pneumocystis jirovecii pneumonia and a lower prevalence of hepatitis C virus coinfection were seen in the early initiation group (P < .05). No differences in mortality, use of antiretroviral therapy, or CD4 T-cell count were seen. CONCLUSIONS: Differences in terms of lifestyle, stress factors, and history of psychological events were seen in the group of patients with early initiation of IDU seen in our facilities. Differences in the clinical scenario were documented.

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INTRODUCTION: Malignant disorders have been linked to the HIV epidemic from its onset. Implementation of highly active antiretroviral therapy (HAART) has resulted in a dramatic reduction in the HIV/AIDS morbidity and mortality. The present study evaluates the neoplasm prevalence before and after the implementation of HAART. METHODS: A cross-sectional study was conducted in 171 HIV-infected adults who were followed in Puerto Rico from May 1992 through December 2005. Neoplasm prevalence was measured, and the difference in AIDS- and non-AIDS-defining neoplasms was analyzed before and after the HAART era. Between-group differences were explored by using chi2, Fisher exact test, analysis of variance, and student t test. RESULTS: Malignant neoplasms were detected in 171 patients (4.8%). Of these, 51.5% were AIDS-defining neoplasms, and 68% were established before HAART. AIDS-defining neoplasms accounted for 62.4% of those detected before the availability of HAART and 25.9% of those detected after HAART. Except for cervical carcinoma, the prevalence of AIDS-defining neoplasms decreased after HAART. Non-AIDS lymphomas and prostate neoplasms were more frequent after HAART. DISCUSSION: Our study found a significant reduction of Kaposi sarcoma and AIDS-related lymphoma in the HAART era of the AIDS epidemic. A higher prevalence of non-AIDS-defining lymphomas, prostate carcinoma, and cervical carcinoma was seen in the HAART era. These findings suggest that factors other than severe immunosuppression are involved in the neoplasms' pathogenesis. Preventive strategies that include screening tests, vaccination, and lifestyle modification should be routinely applied in HIV-infected patients.

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INTRODUCTION: Epidemiologic studies in the United States have estimated that 1.1%-4.3% of the general population attempt suicide at some time in their lives, but limited information is available on suicidal attempts within the HIV-positive population after the introduction of effective antiretroviral therapy. In this study, we evaluate the profile and trends of attempted suicide in a sample of HIV patients in Bayamón, Puerto Rico. METHODS: A retrospective cohort study design was employed to analyze data from the HIV/AIDS longitudinal data bank generated in the Retrovirus Research Center at the Universidad Central del Caribe, Puerto Rico, from 2000 through 2004. We analyzed cumulative self-reported suicide attempts from 714 individuals. Annual percentage changes were assessed by using general linear model with Poisson distribution. Adjusted odds ratios were estimated by using logistic regression. RESULTS: The prevalence of suicide attempts increased in the five-year period examined, from 9.0% to 22.0%. In our study, men were more likely to attempt suicide than were women. In addition, the risk factors most strongly related to suicide attempts after adjusting for age, sex, HIV/AIDS status at study entry, and injection drug use were stress factors related to filial relationships, use of psychoactive substance, and isolation. Changes in conducts related to depression, confusion and anxiety were positively associated with suicide attempts. CONCLUSIONS: Prevention and intervention programs should embrace a more comprehensive approach to care for HIV/AIDS. This approach should recognize the psychological needs and provide the support these patients desperately need.

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Hepatitis C virus (HCV) and human immunodeficiency virus (HIV) co-infection is an important and frequent scenario, predominantly in injecting drug users (IDUs). The present study evaluated morbidity and mortality variation in HIV-infected patients with and without HCV co-infection. Co-infection prevalence was determined in 356 HIV-infected persons. Their clinical manifestations, laboratory findings, risk factors, HIV therapies, and mortality rates were evaluated. The prevalence of HCV was 54% in the overall group and 81% in IDUs, with a predominance of HCV genotype 1. Mortality rates were similar in patients with and without co-infection; however, co-infected patients had significantly higher liver damage as a cause of mortality when compared with those who were not co-infected. The high prevalence of HCV and an emerging mortality from liver diseases showed the significance of this co-infection in the HIV epidemic. Primary and secondary prevention are necessary to reduce the expanding impact of HCV infection in HIV patients.

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The HIV epidemic is a significant global health care issue. With increasing knowledge and improved therapeutics the natural history of the infection has been modified. In this paper we aim to present the general socio-demographic profile and the clinical and therapeutic spectrum of patients with HIV infection who have visited the Bayamón Health Care facilities over the last 12 years and who are part of the Retrovirus Research Center (RRC). The objectives of the study are: 1) describe changes in the demographic, risk factors and clinical stage of patients with HIV infection initially seen in our center; 2) assess changing trends from the clinical and immunological perspective across time; 3) describe mortality risk of patients particularly after the introduction of antiretroviral therapy (ART). This is a cross-sectional study of 3,569 patients admitted to the RRC at the Universidad Central del Caribe between years 1992 through 2005. The variables studied were demographic, risk factors exposure, HIV status at baseline, clinical and immunological parameters, ART and the mortality risk. Chi square with Cramer's coefficient, Kaplan Meier and Cox proportional hazard ratio analysis were performed. The study revealed that individuals presenting at our health care facilities are older and that the proportion of females has increased. The risk factor profile shows increase in heterosexual contact with the disease. The study found that patients treated with ART had significantly lower mortality risk than those without ART. Patients who arrive to RRC with AIDS and Intravenous Drug Users (IDU) had a higher mortality risk than participants with HIV. The analysis of the trends showed changes in the demographic and clinical profile of patients across the years. HIV/AIDS prevention programs and policies need to be continued in Puerto Rico in order to better control the spread of the epidemic.

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INTRODUCTION: The implementation of highly active antiretroviral therapies (HAART) has reduced the mortality attributed to the human immunodeficiency virus (HIV) infection. Variation in the specific causes of death has also changed since the implementation of these therapies. METHODS: A prospective study was performed in 3322 HIV-infected persons enrolled in Puerto Rico between 1992 and 2003. We measured the mortality rates and the causes of death as listed in the death certificate and analyzed the variation as a function of the antiretroviral therapy (ART) use. Statistical analyses were performed to evaluate differences. RESULTS: The study found that persons treated with HAART had significantly lower mortality risk than ART-naïve persons, regardless of gender and the use of injecting drugs. AIDS-defining conditions as a cause of demise were less frequently reported in patients with HAART. Gastrointestinal dysfunction, sepsis, metabolic abnormalities, and non-Kaposi neoplasms were more frequently reported as causes of death in patients treated with HAART. Hepatic failure as cause of death was also more frequent in these patients. The variation in the mortality trends was similar in both genders and according to the presence or absence of intravenous drug use. CONCLUSIONS: Highly active antiretroviral therapies (HAART) is associated with significant reduction in mortality and an increment in gastrointestinal dysfunction, sepsis, non-Kaposi neoplasms, and metabolic disorders as listed causes of death. Adverse and toxic profile of ART, along with the potential synergy of concomitant conditions, may accelerate these trends. Continued mortality surveillance of HIV/AIDS is imperative to follow the epidemic changes.

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OBJECTIVES: To compare the occurrence of AIDS as well as the sociodemographic and clinical profiles of AIDS patients in Puerto Rico before and after the introduction of highly active antiretroviral therapy (HAART) and the privatization of the island's public health care system. METHODS: We compared the incident AIDS cases for two three-year periods, 1992-1994 and 1998-2000, in four populations: (1) entire United States, (2) Puerto Rico, (3) Bayamón Health Region (located in north-central Puerto Rico, it includes 11 of the island's 78 municipalities), and (4) an HIV cohort enrolled at the Universidad Central del Caribe (UCC) School of Medicine. The UCC is located in Bayamón, Puerto Rico, within an academic medical complex that houses the teaching hospital (Ramón Ruíz Arnaú University Hospital), the ambulatory health care facilities (Immunology Clinics) for patients with HIV, and administrative buildings. This represents the major government-sponsored health care infrastructure within the Bayamón Health Region. RESULTS: Incident AIDS declined substantially between the two periods in each of the four populations studied. The 48.1% decline in Puerto Rico exceeded the 40.9% decline in the United States. The decline in Puerto Rico likely resulted from increased availability and implementation of HAART and the delivery of health care to HIV/AIDS patients in an integrated fashion within each regional ambulatory clinic. In spite of this improvement, the absolute number of patients with AIDS on the island remains high. Substantial resources for treatment and prevention are required. The proportion of new AIDS cases was lower among women, persons 40 years of age or older, the less educated, and those living alone. Injection drug use remains the predominant mode of transmission in Puerto Rico. CONCLUSIONS: Further gains in Puerto Rico's fight against AIDS will depend on the island's ability to reduce the transmission that occurs through injection drug use; the use of HAART on a larger number of vulnerable patients, particularly intravenous drug users; educational interventions to improve medication compliance in certain risk groups; and specific measures aimed at decreasing the rate of injection drug use.

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Objetivos. Comparar la frecuencia de casos de sida, así como las características sociodemográficas y clínicas de los pacientes de sida en Puerto Rico, antes y después de la introducción de la terapia antirretrovírica de gran actividad (TARGA) y la privatización del sistema de salud de la isla. Métodos. Comparamos los nuevos casos de sida durante dos períodos de tres años, 1992­1994 y 1998­2000, en cuatro poblaciones: 1) todos los Estados Unidos, 2) Puerto Rico, 3) la Región de Salud de Bayamón (que se sitúa en la parte norte del centro de Puerto Rico y contiene 11 de las 78 municipalidades de la isla) y una cohorte de pacientes infectados por el VIH y atendidos en la Escuela de Medicina de la Universidad Central del Caribe (UCC). La UCC está en Bayamón, Puerto Rico, dentro de un complejo médico universitario donde se encuentran el hospital escuela (Hospital Universitario Ramón Ruíz Arnaú), las clínicas ambulatorias (Clínicas de Inmunología) para pacientes infectados por el VIH y los edificios administrativos. Todo ello en conjunto representa la principal infraestructura de atención sanitaria de carácter público en la Región de Salud de Bayamón. Resultados. La frecuencia de nuevos casos de sida se redujo notablemente entre los dos períodos en cada una de las cuatro poblaciones estudiadas. La reducción de 48,1% observada en Puerto Rico superó a la de 40,9% observada en los Estados Unidos en general. La reducción en Puerto Rico obedeció probablemente a la mayor disponibilidad y aplicación de la TARGA y a la provisión de atención sanitaria de manera integrada a pacientes de sida o con infección por el VIH en cada clínica ambulatoria regional. A pesar de estas mejoras, sin embargo, el número absoluto de pacientes de sida en la isla sigue siendo elevado. Hacen falta cuantiosos recursos para proporcionar tratamiento y aplicar medidas de prevención. La proporción de casos de sida nuevos fue menor entre las mujeres, las personas de 40 años de edad o mayores, las personas con menos escolaridad y las que vivían solas. El uso de drogas inyectadas sigue siendo la principal vía de transmisión en Puerto Rico. Conclusiones. En Puerto Rico, cualquier adelanto futuro en la lucha contra el sida dependerá de la capacidad de la isla para reducir la transmisión ocasionada por el uso de drogas inyectadas; de la administración de la TARGA a un gran número de pacientes vulnerables, especialmente a usuarios de drogas intravenosas; de intervenciones educativas para mejorar la observancia del tratamiento en ciertos grupos en riesgo; y de medidas orientadas a reducir la frecuencia del uso de drogas inyectadas

Objectives. To compare the occurrence of AIDS as well as the sociodemographic and clinical profiles of AIDS patients in Puerto Rico before and after the introduction of highly active antiretroviral therapy (HAART) and the privatization of the island's public health care system. Methods. We compared the incident AIDS cases for two three-year periods, 1992­1994 and 1998­2000, in four populations: (1) entire United States, (2) Puerto Rico, (3) Bayamón Health Region (located in north-central Puerto Rico, it includes 11 of the island's 78 municipalities), and (4) an HIV cohort enrolled at the Universidad Central del Caribe (UCC) School of Medicine. The UCC is located in Bayamón, Puerto Rico, within an academic medical complex that houses the teaching hospital (Ramón Ruíz Arnaú University Hospital), the ambulatory health care facilities (Immunology Clinics) for patients with HIV, and administrative buildings. This represents the major government-sponsored health care infrastructure within the Bayamón Health Region. Results. Incident AIDS declined substantially between the two periods in each of the four populations studied. The 48.1% decline in Puerto Rico exceeded the 40.9% decline in the United States. The decline in Puerto Rico likely resulted from increased availability and implementation of HAART and the delivery of health care to HIV/AIDS patients in an integrated fashion within each regional ambulatory clinic. In spite of this improvement, the absolute number of patients with AIDS on the island remains high. Substantial resources for treatment and prevention are required. The proportion of new AIDS cases was lower among women, persons 40 years of age or older, the less educated, and those living alone. Injection drug use remains the predominant mode of transmission in Puerto Rico. Conclusions. Further gains in Puerto Rico's fight against AIDS will depend on the island's ability to reduce the transmission that occurs through injection drug use; the use of HAART on a larger number of vulnerable patients, particularly intravenous drug users; educational interventions to improve medication compliance in certain risk groups; and specific measures aimed at decreasing the rate of injection drug use

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OBJECTIVE: [corrected] An experimental study has indicated that individuals homozygous for the Arg-encoding allele of p53 gene may have an increased susceptibility to HPV-related cervical cancer but many epidemiological studies have failed to repeat this result. Many epidemiological studies have failed in the attempt to repeat this results. The aim of the present work was to investigate whether the p53 arginine allele confers a risk factor for cervical carcinogenesis. STUDY DESIGN: Using PCR based technology, DNAs from 90 normal cervical samples and 205 abnormal cervical tissue scrapes were analyzed for the type of HPV present and p53 codon 72 polymorphism. RESULTS: Non statistically significant differences were found for the frequencies of p53 genotypes in the different cytological/histological groups (chi2=1.4; P=0.97) nor for the risk for HPV infection (chi2=1; P=0.9). CONCLUSION: This study showed that polymorphism at codon 72 of TP53 gene is not associated with an increased susceptibility to cervical disease and/or HPV infection in the Argentine women population.

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This study presents information on AIDS patients in Puerto Rico, including their general sociodemographic profile, some risk-related parameters, characteristics of vulnerable groups, and elements of the clinical spectrum of the disease. Data were analyzed from the Puerto Rico AIDS Surveillance Program and available studies about the HIV/AIDS epidemic in Puerto Rico. A total of 23.089 AIDS cases were reported to the Puerto Rico AIDS Surveillance Program from January 1981 through February 1999. The HIV/AIDS epidemic has affected mostly males and females between the ages of 30 and 49, though cases have also been reported for other age groups. The cumulative proportion of persons with AIDS who are women has increased tremendously, from 11.4 pour cent for the 1981-1986 period to 21.6 pour cent for the entire 1981-1999 period. In Puerto Rico the category of injecting drug users (IDUs) accounts for the majority of the AIDS cases (52 pour cent), followed by heterosexual contact (22 pour cent), and men who have sex with men (17 pour cent). The three main diagnoses for AIDS on the island are wasting syndrome (30.7 pour cent); esophageal, bronchial, and lung candidiasis (29.4 pour cent); and Pneumocystis carinii pneumonia (26.8 pour cent). According to 1994 vital statistics for Puerto Rico, AIDS was the fourth-leading cause of death. The overall reported AIDS mortality rate was 42.0 per 100.000 persons, with the rate for males, 67.8, much higher than it was for females, 17.4. AIDS is the first cause of death among persons between 30 and 39 years old. Intense efforts are needed to better understand the epidemic in Puerto Rico and its biology, social and family impacts, and financial costs

Este estudio presenta información sobre los pacientes con sida en Puerto Rico, como su perfil sociodemográfico general, los factores de riesgo, las características de los grupos vulnerables y los elementos del espectro clínico de la enfermedad. Los datos analizados procedían del Programa de Vigilancia del sida en Puerto Rico y de estudios sobre la epidemia de VIH/sida en la isla. De enero de 1981 a febrero de 1999 se habían comunicado a dicho programa 23 089 casos de sida. La epidemia de VIH/ sida ha afectado sobre todo a varones y hembras de 30 a 49 años, aunque también se han descrito casos en otros grupos de edad. La proporción acumulada de pacientes del sexo femenino con sida ha aumentado enormemente, de 11,4% en el período 1981­1986 a 21,6% en el período 1981­1999. En Puerto Rico, el grupo de adictos a drogas por vía parenteral representa la mayoría de los casos de sida (52%), seguido de los heterosexuales (22%) y de los varones homosexuales (17%). Los tres diagnósticos de sida establecidos con mayor frecuencia en la isla son el síndrome consuntivo (30,7%), la candidiasis esofágica, bronquial y pulmonar (29,4%) y la neumonía por Pneumocystis carinii (26,8%). De acuerdo con las estadísticas demográficas de 1994 en Puerto Rico, el sida constituyó la cuarta causa de muerte. La tasa global de mortalidad por sida fue de 42,0 por 100 000 habitantes, siendo mucho más elevada en los hombres (67,8) que en las mujeres (17,4). El sida es la primera causa de muerte en personas de 30 a 39 años de edad. Serán necesarios grandes esfuerzos para comprender mejor la epidemia en Puerto Rico, su biología, su impacto social y familiar y sus costes financieros.

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Se analizaron 69 muestras positivas para el virus papiloma humano (VPH) tipos -6, -16 y -18, y 24 muestras con citología cervical normal negativas para el VPH como grupo control. El análisis de la amplificación génica del proto-oncogén HER-2/neu se realizó utilizando la técnica de coamplificación con locus de referencia. Se encontró una asociación entre la amplificación del gen HER-2/neu y el grupo viral de "bajo riesgo" (VPH-6) (p < 0.005). Dentro de este grupo, se observó una asociación entre la amplificación del proto-oncogén y el status citopatológico CIN I (p < 0.01). Debido a que la mayoría de las muestras CIN I analizadas presentaron un patrón coilocítico, la amplificación de HER-2/neu parecería estar relacionada con este tipo de alteración celular. Por otra parte, sería importante estudiar la amplificación génica y la expresión de HER-2/neu en los diferentes estadios de las neoplasias intraepiteliales cervicales a fin de poder evaluar su papel en la progresión del cáncer cervical.

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Se presenta un niño de 18 meses con gastropatía hipertrófica transitoria de la infancia (GHTI) (enfermedad de Ménétrier infantil). Si bien la biopsia gástrica permitió completar el diagnóstico, no demostró la presencia de células con inclusiones tipo citomegalovirus. La presencia de las secuencias génicas de ese virus fue comprobada por la reacción en cadena de polimerasa, en el material de la biopsia. Este caso favorece la existencia de una relación etiopatogénica entre el citomegalovirus y la GHTI

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