RESUMEN
Los leiomiomas son tumores infrecuentes, los piloleiomiomas son el tipo clínico más común y puede ser solitario o múltiple; este último puede ser esporádico o familiar. Presentamos un caso clínico de piloleiomiomas múltiples en dorso, en un paciente joven, a quien se le realizaron estudios para descartar una patología asociada.
Leiomyomas are rare tumors, piloleiomyomas are the most common clinical type and can be solitary or multiple which can be sporadic or familial. We report a case of multiple piloleiomyomas in the back of a young patient, in which studies were performed to rule out pathology associated.
RESUMEN
Los leiomiomas son tumores infrecuentes, los piloleiomiomas son el tipo clínico más común y puede ser solitario o múltiple; este último puede ser esporádico o familiar. Presentamos un caso clínico de piloleiomiomas múltiples en dorso, en un paciente joven, a quien se le realizaron estudios para descartar una patología asociada.(AU)
Leiomyomas are rare tumors, piloleiomyomas are the most common clinical type and can be solitary or multiple which can be sporadic or familial. We report a case of multiple piloleiomyomas in the back of a young patient, in which studies were performed to rule out pathology associated.(AU)
RESUMEN
Comunicamos un caso de pioderma gangrenoso de localización vulvar, en una mujer de 45 años, correspondiendo a una variante clásica (ulcerosa) idiomática, hasta la fecha.
We report a case of vulvar location pyoderma gangrenosum, in a 45 years-old woman, corresponding to a classical variant (ulcerous) idiopathic, to date.
RESUMEN
Comunicamos un caso de pioderma gangrenoso de localización vulvar, en una mujer de 45 años, correspondiendo a una variante clásica (ulcerosa) idiomática, hasta la fecha.(AU)
We report a case of vulvar location pyoderma gangrenosum, in a 45 years-old woman, corresponding to a classical variant (ulcerous) idiopathic, to date.(AU)
RESUMEN
Comunicamos un caso con dos melanomas "in situ", en un varón de 86 años, localizados en ambos lados de la cara con alto riesgo quirúrgico, quien fuera tratado con imiquimod al 5% una vez al día durante dos meses; los resultados hasta el momento, clínicos e histológicos han sido satisfactorios.
A 86 years-old man with two melanomas "in situ" at both sides of his face, treated with imiquimod 5% are presented. The patient has a cardiovascular high risk due to isquemic heart disease, for that reason we start the treatment with imiquimod once a day for two months. The clinical and histological response was good and a follow up will be as long as we can.
RESUMEN
Comunicamos dos casos de nevo del tejido conectivo, el primero con patrón histológico mixto y el segundo con predominio de alteraciones en las fibras elásticas. No se constataron síndromes ni patología sistémica asociada. Un caso presentó disposición linear y un nevo acrómico asociado.
Two cases of connective tissue nevi are reported, one of them with a mixed histopatologic pattern and one with elastin fibers diminished. None of the patients had systemic involvement or associated syndromes. The mixed connective tissue nevi type showed a linear distribution and has associated an acromic nevi.
RESUMEN
Comunicamos un caso con dos melanomas "in situ", en un varón de 86 años, localizados en ambos lados de la cara con alto riesgo quirúrgico, quien fuera tratado con imiquimod al 5% una vez al día durante dos meses; los resultados hasta el momento, clínicos e histológicos han sido satisfactorios.(AU)
A 86 years-old man with two melanomas "in situ" at both sides of his face, treated with imiquimod 5% are presented. The patient has a cardiovascular high risk due to isquemic heart disease, for that reason we start the treatment with imiquimod once a day for two months. The clinical and histological response was good and a follow up will be as long as we can.(AU)
RESUMEN
Comunicamos dos casos de nevo del tejido conectivo, el primero con patrón histológico mixto y el segundo con predominio de alteraciones en las fibras elásticas. No se constataron síndromes ni patología sistémica asociada. Un caso presentó disposición linear y un nevo acrómico asociado.(AU)
Two cases of connective tissue nevi are reported, one of them with a mixed histopatologic pattern and one with elastin fibers diminished. None of the patients had systemic involvement or associated syndromes. The mixed connective tissue nevi type showed a linear distribution and has associated an acromic nevi.(AU)
RESUMEN
La livedo vasculitis representa un patrón de respuesta a múltiples causas, que confluyen en un estado procoagulante de los vasos de la dermis y subcutis superficial, resultando en úlceras dolorosas con localización en miembros inferiores y cicatrices características. Efectuamos una revisión de las múltiples sinonimias, aspectos clínicos e histológicos de tres casos, los que respondieron aceptablemente al tratamiento con pentoxifilina vía bucal.
Livedo is not a specific disease, but a distinctive clinicopathologic pattern of changes, that may occur in a variety of different circunstances. The main pathogenic mechanism is considered to be intraluminal thrombosis of dermal vessels, with a common pathway and a prothrombotic state. A glossary, clinical, histological and therapeutic aspects are reviewed.
RESUMEN
La livedo vasculitis representa un patrón de respuesta a múltiples causas, que confluyen en un estado procoagulante de los vasos de la dermis y subcutis superficial, resultando en úlceras dolorosas con localización en miembros inferiores y cicatrices características. Efectuamos una revisión de las múltiples sinonimias, aspectos clínicos e histológicos de tres casos, los que respondieron aceptablemente al tratamiento con pentoxifilina vía bucal.(AU)
Livedo is not a specific disease, but a distinctive clinicopathologic pattern of changes, that may occur in a variety of different circunstances. The main pathogenic mechanism is considered to be intraluminal thrombosis of dermal vessels, with a common pathway and a prothrombotic state. A glossary, clinical, histological and therapeutic aspects are reviewed.(AU)
RESUMEN
Presentamos un caso de lepra dimorfa lepromatosa, en un hombre austríaco radicado en la Argentina desde hace 40 años, que presentaba placas infiltradas monomorfas y asintomáticas en tronco y miembros, sin alteraciones neurológicas periféricas evidentes. La biopsia de una de las lesiones demostró áreas de hiperplasia fibroblástica perineural "en catafilas de cebolla", granulomas en contacto focal con la epidermis, con transgresión del muro de contención y abundantes bacilos ácido-alcohol resistentes, agrupados en la tinción para micobacterias. El paciente respondió adecuadamente a la terapia con dapsona, rifampicina y clofazimina; sin embargo presentó episodio reacciónal tipo 1 o "reversal", que requirió terapia con prednisona por seis meses.
A case of Dimorphous Lepromatous Leprosy in an Austrian man, who had been living in Argentina for the past 40 years is reported. He presented asymptomatic, infiltrated, monomorphous plaques in his trunk and limbs, without peripheral neurologic manifestations. A skin biopsy specimen obtained from an infiltrated lesion on the back, demonstrated areas of perineural fibroblastic hyperplasia "onion-cataphylls like", granulomas contacting epidermis with violation of the Grenz zone and numerous grouped acid-fast bacilli demonstrated with the Ziehl-Neelsen stain. The patient responded well to therapy with dapsone, rifampicine, and clofazamine, but presented a type 1 reaction (reversal reaction) which required a six-months prednisone therapy.
RESUMEN
Se presenta el caso de un varón de 45 años, que consultó por una lesión presente en dorso de la nariz, de aproximadamente dos meses de evolución. ¿Cuál es su diagnóstico?.
A 45 years old- man presented a firm, erythematous, indolent lesion on his nose from two months. What is your diagnosis?.
RESUMEN
Presentamos un caso de lepra dimorfa lepromatosa, en un hombre austríaco radicado en la Argentina desde hace 40 años, que presentaba placas infiltradas monomorfas y asintomáticas en tronco y miembros, sin alteraciones neurológicas periféricas evidentes. La biopsia de una de las lesiones demostró áreas de hiperplasia fibroblástica perineural "en catafilas de cebolla", granulomas en contacto focal con la epidermis, con transgresión del muro de contención y abundantes bacilos ácido-alcohol resistentes, agrupados en la tinción para micobacterias. El paciente respondió adecuadamente a la terapia con dapsona, rifampicina y clofazimina; sin embargo presentó episodio reacciónal tipo 1 o "reversal", que requirió terapia con prednisona por seis meses.(AU)
A case of Dimorphous Lepromatous Leprosy in an Austrian man, who had been living in Argentina for the past 40 years is reported. He presented asymptomatic, infiltrated, monomorphous plaques in his trunk and limbs, without peripheral neurologic manifestations. A skin biopsy specimen obtained from an infiltrated lesion on the back, demonstrated areas of perineural fibroblastic hyperplasia "onion-cataphylls like", granulomas contacting epidermis with violation of the Grenz zone and numerous grouped acid-fast bacilli demonstrated with the Ziehl-Neelsen stain. The patient responded well to therapy with dapsone, rifampicine, and clofazamine, but presented a type 1 reaction (reversal reaction) which required a six-months prednisone therapy.(AU)
RESUMEN
Se presenta el caso de un varón de 45 años, que consultó por una lesión presente en dorso de la nariz, de aproximadamente dos meses de evolución. ¿Cuál es su diagnóstico?.(AU)
A 45 years old- man presented a firm, erythematous, indolent lesion on his nose from two months. What is your diagnosis?.(AU)
RESUMEN
Presentamos un caso de lepra dimorfa lepromatosa, en un hombre austríaco radicado en la Argentina desde hace 40 años, que presentaba placas infiltradas monomorfas y asintomáticas en tronco y miembros, sin alteraciones neurológicas periféricas evidentes. La biopsia de una de las lesiones demostró áreas de hiperplasia fibroblástica perineural "en catafilas de cebolla", granulomas en contacto focal con la epidermis, con transgresión del muro de contención y abundantes bacilos ácido-alcohol resistentes, agrupados en la tinción para micobacterias. El paciente respondió adecuadamente a la terapia con dapsona, rifampicina y clofazimina; sin embargo presentó episodio reacciónal tipo 1 o "reversal", que requirió terapia con prednisona por seis meses.(AU)
A case of Dimorphous Lepromatous Leprosy in an Austrian man, who had been living in Argentina for the past 40 years is reported. He presented asymptomatic, infiltrated, monomorphous plaques in his trunk and limbs, without peripheral neurologic manifestations. A skin biopsy specimen obtained from an infiltrated lesion on the back, demonstrated areas of perineural fibroblastic hyperplasia "onion-cataphylls like", granulomas contacting epidermis with violation of the Grenz zone and numerous grouped acid-fast bacilli demonstrated with the Ziehl-Neelsen stain. The patient responded well to therapy with dapsone, rifampicine, and clofazamine, but presented a type 1 reaction (reversal reaction) which required a six-months prednisone therapy.(AU)
RESUMEN
Se presenta el caso de un varón de 45 años, que consultó por una lesión presente en dorso de la nariz, de aproximadamente dos meses de evolución. ¿Cuál es su diagnóstico?.(AU)
A 45 years old- man presented a firm, erythematous, indolent lesion on his nose from two months. What is your diagnosis?.(AU)
RESUMEN
Se comunica el caso de un varón de 61 años, que nos consultó por lesiones presentes sobre un tatuaje.
A 61 years-old man who consulted for infiltrated lesions on the red area of a tattoo is reported.
RESUMEN
The temporal and spatial distribution of glutamate decarboxylase 67 (GAD67) mRNA-containing neurons in the dentate gyrus was analyzed from embryonic day 20 (E20) to postnatal day 15 (PN15) with nonradioactive in situ hybridization methods. A major goal was to follow the development of an early-appearing population of gamma-aminobutyric acid (GABA) neurons within the developing molecular layer. At E20, GAD67 mRNA-containing neurons were highly concentrated slightly above the outer border of the developing granule cell layer. By PN3-PN5, many labeled cells were distributed within the developing granule cell layer; by PN15, labeled neurons occupied positions normally seen in the adult, such as along the inner border of the granule cell layer. This developmental pattern is unique and led to additional studies to determine the potential fate of the early-appearing GABA population. The possibility of apoptotic cell death was investigated with in situ end labeling techniques at developmental ages E21-PN15. Very few apoptotic cells were detected in the developing molecular layer at all ages examined. Birthdating studies of neurons labeled with bromodeoxyuridine revealed a changing pattern, similar to that of GAD67 mRNA, for cells with birthdates (E14) of many of the mature GAD-containing neurons in the dentate gyrus. The changes in the mRNA and birthdating patterns from E20-PN15 suggest that some of the early-appearing GABA neurons within the developing molecular layer of the dentate gyrus may alter their positions to eventually become the mature GABA population along the inner border of the granule cell layer.
Asunto(s)
Giro Dentado/crecimiento & desarrollo , Neuronas/química , Ácido gamma-Aminobutírico/análisis , Animales , Bromodesoxiuridina/análisis , Muerte Celular , Giro Dentado/química , Giro Dentado/patología , Edad Gestacional , Glutamato Descarboxilasa/genética , Hibridación in Situ , Neuronas/patología , ARN Mensajero/análisis , Ratas , Ratas Sprague-DawleyRESUMEN
Immunohistochemical methods were used to determine the earliest times of detection for two forms of glutamate decarboxylase (GAD67 and GAD65) in the embryonic and early postnatal rat hippocampal formation and to determine whether their distribution patterns differed from each other and from those of the adult. Both GAD67- and GAD65-containing neurons were observed as early as embryonic day 17 (E17)-E18 in the hippocampus and E19 in the dentate gyrus, and this was substantially earlier than GAD had been detected previously in the hippocampal formation. The two GAD isoforms displayed very similar distribution patterns, but these patterns were distinctly different from those of the adult. From E17 to E20, GAD67 and GAD65 were expressed in neuronal cell bodies throughout the hippocampal and dentate marginal zones (future dendritic layers), and relatively few existed within the principal cell body layers, where GAD-positive neurons are frequently concentrated in the adult. At E21 to postnatal day 1 (P1), there was a sudden shift from a predominance of GAD-containing cell bodies within the developing dendritic regions to a meshwork of GAD-positive processes with terminal-like varicosities in these same regions. This pattern also contrasted with that of the adult, in which GAD-labeled terminals are highly concentrated in the principal cell layers. Electron microscopic observations of the GAD-labeled processes at P1 confirmed their axon-like appearance and demonstrated that the immunoreactivity was consistently localized in vesicle-filled regions that were often closely apposed to and, in some instances, established synaptic contacts with dendritic profiles. The present identification of an early abundance of GAD-containing structures in the hippocampal formation and the marked change in their distribution during development complement recent observations of developmental changes in the functioning of the GABA system and provide additional support for the early involvement of this neurotransmitter system in hippocampal development.