PURPOSE:To analyze PCNA immunoexpression on the inferior pole of the spleen of splenectomized rats submitted to hyperbaric oxygenation (HBO). METHODS:Were analyzed fragments of the inferior pole of the spleen of 20 male Wistar rats submitted to splenectomy with preservation of the inferior pole. The rats were divided in two groups: group A (n=10) without HBO and group B (n=10) submitted to HBO at 2, 5 atmospheres per 120 minutes, twice a day for three days and once a day for seven days. The groups were then subdivided in four subgroups: A15 (n=5), with euthanasia on the 15 th day; A45 (n=5), with euthanasia on the 45 th day; B15 (n=5) with euthanasia on the 15 th day and B45 with euthanasia on the 45 th day. Respectively on these days, fragments of the inferior pole of the spleen of all animals were collected and analyzed with the immunohistochemistry technique in order to evaluate PCNA expression. RESULTS:There was an expressive increase in PCNA immunoreactivity in the group B. The 45 day postoperative period resulted in a higher level of positivity than the 15 day postoperative period (p<0.01). CONCLUSION:The quantitative analysis of proliferating cell nuclear antigen positive suggests that hyperbaric oxygenation increases cellular proliferation, contributing to splenic regeneration.

HighlightsSkin metastasis from an endometrial carcinoma is very rare and prognosis is poor.This report describes clitoral metastasis from an endometrial adenocarcinoma.Clitoral and distant metastases and the primary site were diagnosed concomitantly.

Acute Hemorrhagic Edema of Infancy is an infrequent leukocytoclastic vasculitis which occurs almost exclusively in children between 4 months and 2 years of age. It is clinically characterized by the triad fever, purpuric lesions on the face, auricular pinna and extremities, and edema. Although the cutaneous findings are dramatic and of rapid onset, the prognosis is favorable, with spontaneous resolution within 1 to 3 weeks. Three cases are described in which clinical and histopathological findings are characteristic of acute hemorrhagic edema of infancy. Keywords: Edema; Purpura, Schoenlein-Henoch; Vasculitis Resumo: O Edema Agudo Hemorrágico da Infância é uma vasculite leucocitoclástica pouco frequente, que ocorre, quase exclusivamente, em crianças entre 4 meses e 2 anos de idade. Caracteriza-se, clinicamente, pela tríade febre, lesões purpúricas em face, pavilhões auriculares e extremidades e edema. Embora os achados cutâneos sejam dramáticos e de surgimento rápido, o prognóstico é favorável, com resolução espontâ-nea dentro de 1 a 3 semanas. Descrevem-se três casos cujos achados clínicos e histopatológicos são característicos de edema agudo hemorrágico da infância.

Purpose To evaluate the viability of the upper (UP) and lower pole (LP) of the spleen from a macro and microscopic point of view, after subtotal splenectomy with preservation (SSP) of the UP and the LP. Methods Seventeen male Wistar rats, two months old, were submitted to SSPUP and SSPLP and 5 to simulated operation (SG). After 80 days, the rats were euthanized, and the remaining LP and UP and intact spleens were evaluated macroscopically and microscopically. Results Two rats died during the operation. Macroscopic analysis showed that in 15 LP, one of them was not viable and in 15 UP and in 5 spleens in the SG, all were viable. In the statistical analysis, there was no difference in relation to viability. The LP and UP analyzed showed variation. As for the length, the UP increased significantly; however, in relation to the width, there was a significant increase in the LP in relation to the UP. In addition, the weight of the UP was significantly greater than that of the LP. Microscopic analysis attested viability of the splenic remnants. Conclusion There was no significant difference regarding the viability of UP and LP, in macroscopy and microscopy.

Although lung injuries were significantly more frequent in children who had received total parenteral nutrition, it was impossible to conclude that the lipid infusion had a direct relationship with these injuries, because prematurity and duration of hospital stay were significant co-factors.

Abstract. Breast and ovarian cancers are important public health problems in Brazil. However, in various locations in the Brazilian territory these types of cancer remain poorly characterized. Therefore, this study aimed to compare data collected from the Pathology Services of two Oncology Reference Hospitals in Espirito Santo state (Brazil) with the data in previous Brazilian studies. Histological type frequency and age at diagnosis of breast and ovarian tumors between 2001-2004 and 2009-2010 were analyzed. Tumor size, histological grade, lymph node status, hormone receptor status [estrogen (ER) and progesterone receptors (PR)] as well as HER2 and Ki-67 marker status were obtained for the cases of infiltrating ductal carcinomas of the breast during the period 2009-2010. Categorical variables were described by their absolute and/or relative frequencies, while quantitative variables were expressed as the mean ± standard deviation and median, using 95% confidence intervals. Chi-square tests were performed to examine whether or not the studied variables differed by age at the time of diagnosis. Malignant breast tumors (1,758) and 119 malignant ovarian tumors were examined. Mean ages for malignant breast and ovarian tumors were 53.59 and 52.98 years, respectively. An increased tumor frequency in the age group of ≤35 years was observed for other malignant tumors of the breast during the period of

O coriocarcinoma primário de ovário é um tumor raro que se origina de células germinativas, apresentando-se, na maioria das vezes, associado a outros tumores também de origem de células germinativas. Será descrito um caso de coriocarcinoma primário de ovário em uma menina de 10 anos que apresentava um quadro de sangramento vaginal e distensão abdominal. Após serem dosados os marcadores tumorais, que mostraram níveis de beta-HCG (gonadotrofina coriônica humana) e CA-125 altos, e alfafetoproteína normal, e ser realizado ultrassonografia abdominal, a paciente foi submetida a tratamento cirúrgico. O exame histopatológico da peça cirúrgica e a imunohistoquímica foram compatíveis com diagnóstico de coriocarcinoma primário de ovário. Depois da cirurgia, a paciente evoluiu mal, indo a óbito no primeiro dia de pós-operatório devido a uma embolia tumoral pulmonar. Concluiu-se, então, que essa neoplasia é bastante agressiva, causando metástase precoce na maioria dos casos e apresentando prognóstico desfavorável, principalmente em jovens abaixo de 20 anos de idade.

Os schwannomas são tumores benignos, geralmente solitários, encapsulados e de crescimento lento, que têm sua origem nas células de Schwann neoplásicas diferenciadas, com desenvolvimento habitual extramedular intradural relacionado a raízes nervosas. O schwannoma melanocítico é variante dessas neoplasias cuja localização em quase um terço dos casos está na raiz nervosa posterior, com apresentação clínica inespecífica. A ressonância magnética é o exame de imagem mais utilizado em seu diagnóstico, revelando imagens hiperintensas em T1 e hipointensas em T2. A confirmação diagnóstica é obtida a partir do estudo histológico e imuno-histoquímico, em que se observa intensa pigmentação citoplasmática. Existem dois tipos distintos de schwannomas melanocíticos: o esporádico e o psammomatoso, este último relacionado ao chamado complexo de Carney, uma forma de neoplasia endócrina múltipla de caráter familiar. Existem poucos relatos dessas neoplasias, sendo a maior série composta de cinco casos. O objetivo deste relato é descrever um raro caso de schwannoma melanocítico da coluna lombar do tipo esporádico de localização extramedular. Apresenta-se breve revisão de literatura contendo as principais características do tumor, incluindo suas diferentes formas, diagnósticos diferenciais, estudo histológico e imuno-histoquímico, bem como a abordagem atualmente preconizada, a fim de colaborar para o melhor entendimento dessa neoplasia.