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OBJETIVO: avaliar a eficácia da injeção intraoperatória para identificação do LS em câncer de mama com o uso do Dextran 500-99m-tecnécio (Tc) e analisar o tempo para marcação do linfonodo sentinela (LS) axilar. MÉTODOS: estudo prospectivo realizado entre abril de 2008 e junho de 2009 que incluiu 74 biópsias de LS em pacientes com câncer de mama em estádios T1N0 e T2N0. Após a indução anestésica, injetou-se de 0,5 a 1,5 mCi (18 a 55 MBq) de Dextran 500-99m-Tc filtrado 0,22 µm num volume de 5 mL de acordo com a técnica de injeção subareolar para a biópsia do LS. Após a marcação com o radiofármaco injetou-se 2 mL de azul patente. O tempo entre a injeção e a marcação na região axilar, a contagem com o probe do LS in vivo, ex vivo, background e o número de LS identificados foram documentados. Os dados foram analisados por meio da estatística descritiva pelo programa SPSS, versão 18. RESULTADOS: identificamos o LS em 100 por cento dos casos. A taxa de identificação com o probe foi de 98 por cento (73/74 casos). Um caso (1,35 por cento) estava marcado apenas com o azul. A dose média do radiofármaco aplicada foi 0,97 mCi±0,22. O tempo para marcação na região axilar, após a injeção subareolar, foi de 10,7 minutos (±5,7 min. ). Foram identificados, em média, 1,66 linfonodos marcados com o radioisotopo. CONCLUSÃO: o procedimento para identificação do LS com injeção intraoperatória do radiofármaco é oncologicamente seguro, apresentando conforto ao paciente e agilidade à equipe cirúrgica.

PURPOSE: to determine the efficacy of intraoperative injection of Dextran-500-99m-technetium (Tc) for the identification of the sentinel lymph node (SLN) in breast cancer and analyze time to label the SLN in the axillary region. METHODS: a prospective study between April 2008 and June 2009, which included 74 sentinel lymph node biopsies (SLNB) in patients with breast cancer in stages T1N0 and T2N0. After induction of anesthesia, 0.5 to 1.5 mCi of Dextran-500-99m-Tc filtered 0.22 µm in a volume of 5 mL was injected intraoperative using the subareolar technique for SLNB. After labeling with the radioisotope, 2 mL of patent blue was injected. The time elapsed between injection and the axillary hot spot, the in vivo and ex vivo counts of the hottest nodes, the background count, and the number of SLN identified were documented. Data were analyzed using descriptive statistics with SPSS program, version 18. RESULTS: we identified the SLN in 100 percent of cases. The rate of SLN identification with the probe was 98 percent (73/74 cases). In one case (1.35 percent) the SLN was labeled only with the blue dye. The mean dose of radioisotope injected was 0.97±0.22 mCi. The average time to label the SLN was 10.7 minutes (±5.7 min). We identified on average of 1.66 SLN labeled with the radioisotope. CONCLUSION: the procedure for SLN identification with an intraoperative injection of the radioisotope is oncologically safe and comfortable for the patient, providing agility to the surgical team.

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O autoexame da mama, que consiste em avaliação mensal das mamas pela própria mulher, foi promovido na década de 1950 por Cushman Haagensen, um cirurgião da mama dos Estados Unidos da América, numa época em que muitas mulheres eram diagnosticadas com tumores avançados e inoperáveis. Desde então, este vem sendo estimulado por muitas organizações. A partir dos estudos randomizados realizados em Xangai e São Petersburgo (Rússia), os quais demonstraram não diminuir a mortalidade por câncer de mama e aumentar o número de biópsias, a importância do autoexame como método de rastreamento vem sendo contestada. Com base nestes estudos, há evidências claras de danos, sem evidência de benefício sobre o estímulo e treinamento para o autoexame em mulheres. Entretanto, alguns estudos e diretrizes emitidas por organizações nacionais o recomendam não como método de rastreamento isolado, mas como parte do cuidado da saúde mamária e como ferramenta para diminuir os casos avançados em regiões carentes. Indicações específicas para pacientes de alto risco e para mulheres jovens estão em investigação

The breast self-examination, which consists of the monthly assessment of the breast by the woman herself, was promoted in the 1950s by Cushman Haagensen, a breast surgeon in the United States of America, at a pre-mammographic era when many women were diagnosed with advanced and inoperable tumors. Since then, it has been stimulated by many organizations. Randomized trials conducted in Shanghai and St. Petersburg (Russia), which failed to demonstrate any decrease in breast cancer mortality, but showed an increase in the number of biopsies. Therefore, the importance of breast self-examination as a screening method has been challenged. Accordingly to these studies, there is clear evidence of damage, without evidence of benefit on the encouragement and training for self-examination in women. Nevertheless, some studies and guidelines issued by national organizations recommend it not as an isolated screening procedure, but as a part of the breast health care and a tool for downstaging advanced cases in underserved regions. Selected indications for high risk patients and for young women are under investigation

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PURPOSE: to determine the efficacy of intraoperative injection of Dextran-500-99m-technetium (Tc) for the identification of the sentinel lymph node (SLN) in breast cancer and analyze time to label the SLN in the axillary region. METHODS: a prospective study between April 2008 and June 2009, which included 74 sentinel lymph node biopsies (SLNB) in patients with breast cancer in stages T1N0 and T2N0. After induction of anesthesia, 0.5 to 1.5 mCi of Dextran-500-99m-Tc filtered 0.22 µm in a volume of 5 mL was injected intraoperative using the subareolar technique for SLNB. After labeling with the radioisotope, 2 mL of patent blue was injected. The time elapsed between injection and the axillary hot spot, the in vivo and ex vivo counts of the hottest nodes, the background count, and the number of SLN identified were documented. Data were analyzed using descriptive statistics with SPSS program, version 18. RESULTS: we identified the SLN in 100% of cases. The rate of SLN identification with the probe was 98% (73/74 cases). In one case (1.35%) the SLN was labeled only with the blue dye. The mean dose of radioisotope injected was 0.97 ± 0.22 mCi. The average time to label the SLN was 10.7 minutes (± 5.7 min). We identified on average of 1.66 SLN labeled with the radioisotope. CONCLUSION: the procedure for SLN identification with an intraoperative injection of the radioisotope is oncologically safe and comfortable for the patient, providing agility to the surgical team.

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Com o aumento do rastreamento mamográfico, identificam-se cada vez mais lesões menores e não palpáveis, surgindo a necessidade de localiza-las tanto para diagnóstico como para tratamento. Neste trabalho, descreveram-se a técnica e suas indicações e apresentaram-se os resultados dos casos de agulhamento do Serviço de Mastologia e Radiologia do Hospital de Clínicas de Porto Alegre (HCPA). Métodos: Avaliaram-se, retrospectivamente, 586 casos de agulhamento operados no período de 1995 a 2004. As indicações para o procedimento foram as alterações mamográficas de lesões não palpáveis, classificadas de acordo o sistema BIRADS. Resultados: A principal indicação cirúrgica foram as microcalcificações, num total de 373 casos (63,7%), seguidas de nódulos em 37,2%. A idade média das pacientes foi de 53 anos (23 a 82). O valor preditivo positivo (VPP) geral para malignidade foi de 0,30 (177/586 casos). As alterações funcionais benignas da mama (AFBMs) corresponderam ao diagnóstico mais comum (34,1%). Noventa e quatro por cento dos casos de carcinoma ductal in situ (CDIS) foram diagnosticados mamograficamente como microcalcificações. Conclusões: Considerando os dados apresentados e a experiência do serviço, a biópsia por agulhamento continua sendo o principal procedimento para diagnóstico e tratamento de lesões não palpáveis. Trata-se de um método seguro, porém não isento de riscos.

With the increasing use of mammography, more and smaller non- palpable lesions are found, bringing the need of localize them for diagnostic and even therapeutic purposes. We describe the surgical technique, indications and results with the well-known standard procedure of excision after wire localization. Method: We retrospectively evaluated the result of 586 wire localizations between 1995 and 2004. The indications for the procedure were non-palpable mammographic abnormalities classified according to BIRADS system. Results: The main indication for this procedure were microcalcifications in 63.7% of the cases (n=373), followed by lumps 37.2%. The mean age of these patients was 53 years (range 23- 82 years). We observed an overall positive predictive value (PPV) for malignancy of 0.30 (177/586 cases). Benign fybrocistic changes was found as the most common pathological diagnosis (34.1%). Ninety-four per cent of the ductal carcinoma in situ were detected mammographically as microcalcifications. Conclusions: The authors call attention for the use of a very careful and delicate surgical technique in order to achieve the best results. Our experience confirm that the wire-guided excision of non-palpable breast lesions is a safe and reliable diagnostic/therapeutic procedure.

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Mastalgia é um dos sintomas mais comuns em mulheres, tendo uma prevalência de 41 a 69% e pode se apresentar como um leve desconforto até dor severa, que interfere na qualidade de vida. A principal preocupação das pacientes que consultam por este sintoma é o medo do câncer. Essa é classificada em mastalgia cíclica, acíclica ou extramamária. Cíclica quando se apresenta no período pré-menstrual; na acíclica não há relação com o ciclo e, geralmente, acomete pacientes na pós-menopausa. A extramamária é a dor referida na mama, porém usualmente é de origem musculoesquelética. Na presença de achados clínicos e radiológicos normais, aproximadamente 85% das pacientes melhoram apenas com orientação e tranquilização, não necessitando de medicação. Foi realizada uma revisão sistemática para avaliar as possibilidades terapêuticas e seus níveis de evidência. Os anti-inflamatórios não esteróides tópico, para mastalgia cíclica ou acíclica, e o fitoterâpico Agnus castus, para mastalgia cíclica, demonstraram boa eficácia e tolerabilidade e podem ser usados como medida inicial. O tamoxifeno e o danazol são medicamentos eficazes, porém apresentam mais efeitos colaterais. Para casos especiais, ainda há a alternativa de usar bromocriptina e goserelina. O manejo da dor mamária pode ser sintetizado em três itens: excluir câncer, orientar e tranquilizar ao máximo e medicar ao mínimo.(AU)

Breast pain or mastalgia is one of the most common symptoms in women, with a prevalence ranging from 41 to 69%. It presents as a mild discomfort to severe pain, that interferes with the quality of life. The main concern of patients consulting for this symptom is the fear of cancer. It is classified as cyclical, acyclical or extra-mammary. When presented during the premenstrual period, it is cyclical; acyclical, when not cycle-related and usually affects patients in post-menopausal. Extra-mammary is the breast referred pain, but it is usually of muscle-skeptical origin. In the presence of normal clinical and radiological findings, approximately 85% of patients improve only with reassurance, not requiring medication. A systematic review was performed to assess the therapeutic possibilities and their evidence levels. Topical non-steroidal anti-inflammatory drugs, for cyclic or acyclic mastalgia, and the phytotherapic Agnus castus, for cyclic mastalgia, showed good efficacy and tolerability and can be used as an initial measure. Tamoxifen and danazol are effective drugs, but they present more side effects. For special cases, there is the alternative of using bromocriptin and goserelin. Breast pain management can be summarized in three items: exclude cancer, maximum reassurance and minimum medication.(AU)

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The objective of our study was to investigate the patterns of use of psychoactive substances among students of a medical school in Southern Brazil and to explore a putative role of discrete behavioral and social variables in their drug use. This is a descriptive and transversal cut study. All regularly enrolled medical students at the University of Caxias do Sul were invited to participate in the study. A self-administered questionnaire, which analyses lifetime drug use as well as drug use in the previous 30 days and 12 months was utilized to collect data. From a total of 318 regularly enrolled students, 183 (57.5%) completed and returned the questionnaires. The highest prevalence rates of lifetime drug use, drug use in the last 12 months and drug use in the last 30 days were observed, according to drug type, as follow in descending order: alcohol, tobacco, marijuana, inhalants, tranquilizers, amphetamine and cocaine. A multivariate analysis indicated that research respondents who live with their parents as well as those whose parents live together harmoniously, those who deny close ties to drug users, those who disapprove drug use, those who are not tobacco smokers and those who manifest religious beliefs and practice presented the most reduced levels of illicit drug use. The use of psychoactive substances among medical students in the University of Caxias do Sul is a significant problem. Appropriate and timely initiatives are needed to prevent and curb drug use among medical students.

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