ABSTRACT
Abstract: Basal cell carcinoma is the most common skin cancer in the world. The aim of this study was to evaluate the surgical margin of basal cell carcinoma and correlate this with its histologic subtype. A retrospective analysis of pathology laboratory records from 1990 to 2000 was performed and the following data was collected: age, sex, race, anatomical location, histological type, and state of the excision margins in 1,428 histopathological reports of basal cell carcinoma. Ages ranged from 6 to 99 years, with an average of 57. There was a slight predominance of lesions in white women patients, and the most common histological subtype was the nodular, followed by the superficial. The most common locations were in the head and neck, with highest prevalence appeared in the nose. Surgical margins revealed a lateral involvement of 20.14% and a deep involvement of 12.47%. The fibrosing basal cell carcinoma is the histological type that most often presented positive surgical margins.
Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Aged , Aged, 80 and over , Young Adult , Skin Neoplasms/surgery , Skin Neoplasms/pathology , Carcinoma, Basal Cell/surgery , Carcinoma, Basal Cell/pathology , Margins of Excision , Recurrence , Retrospective Studies , Risk FactorsABSTRACT
A case of acquired megacolon in a 62-year-old man with acute abdomen due to sigmoid volvulus is reported. The case was associated with the use of psychiatric medications. The aim in this report was to emphasize the differential diagnosis with Chagas megacolon. Anatomopathological examination did not show any evidence of denervation, ganglionitis and/or myositis, and the serological test for Chagas disease was negative.
Relata-se caso de megacólon adquirido, associado ao uso de medicamentos psiquiátricos, em homem de 62 anos, com abdome agudo por volvo de sigmóide, com o objetivo de destacar o diagnóstico diferencial de megacólon chagásico. O exame anátomo-patológico não evidenciou denervação, ganglionite e/ou miosite e a sorologia para doença de Chagas foi negativa.
Subject(s)
Humans , Male , Middle Aged , Antipsychotic Agents/adverse effects , Chagas Disease/diagnosis , Intestinal Diseases, Parasitic/diagnosis , Megacolon/diagnosis , Diagnosis, Differential , Megacolon/chemically induced , Megacolon/pathologyABSTRACT
Estudou-se o comportamento biológico e histopatológico de uma cepa genuínamente mariliense de Trypanosoma cruzi, isolada em 1997 através de xenodiagnóstico artificial. Vinte e cinco camundongos swiss foram infectados intraperitonealmente, sendo 11 utilizados para a realizaçäo da curva parasitêmica e observaçäo da morfologia dos tripomastigotas e 14 foram sacrificados após o 17, 23, 30, 60 e 180 dias pós-infecçäo e coletados coraçäo, esôfago, fígado, cólon, e músculo esquelético (fragmento da coxa direita) para análise histopatológica. Cultura em meio LIT foi realizada para análise de DNA. Os resultados mostraram predomínio de formas largas, baixa parasitemia com picos médios de 860 tripomastigotas/5mil de sangue ao redor do 20º dia de infecçäo. Nenhum camundongo morreu na fase aguda da infecçäo. Exame histopatológico mostrou poucos ninhos de amastigotas em coraçäo, raros em músculo esquelético e cólon com discreto processo inflamatório. Comparada com a cepa Y, que foi isolada de uma paciente da mesma regiäo, notamos diferentes características biológicas e comportamentais, porém a análise de DNA as coloca no mesmo grupo, demonstrando a proximidade dessas cepas