PURPOSE:To investigate the impact of cafeteria diet on ghrelin expression in rectal tissue and identify the morphologic cell type. METHODS:Twenty-four male Wistar rats were divided into four subgroups of six animals each: RC1 (rat chow 1) and CAF1 (cafeteria diet 1) for a period of 30 days; RC2 (rat chow 2) and CAF2 (cafeteria diet 2) for a period of 60 days. The animal and rectal weight, the number and the type of immunoreactive ghrelin cells were recorded and compared between the subgroups. The statistical study was established by ANOVA and Student's t test. RESULTS:There was no difference in the total of immunoreactive cells (p=0.685) between the subgroups nor between weight and presence or absence of ghrelin expression (p=0.993). All the immunoreactive cells identified were closed-type. CONCLUSION:The cafeteria diet did not have influence on the amount of immunoreactive rectal cells of ghrelin and only one type (closed-type) of immunoreactive cells was expressed in the rectum.

A colite cística profunda consiste na presença de cistos submucosos, contendo muco, principalmente no reto e no cólon esquerdo. De etiologia controversa, com pouco mais de 200 casos relatados na literatura mundial. Tem importância pela capacidade de mimetizar neoplasia maligna colorretal. Descreveremos um caso de colite cística profunda localizada no reto e submetida a tratamento cirúrgico, seu acompanhamento pós-operatório e revisão da literatura.

Colitis cystica profunda comprises submucous mucus-filled cysts, located mainly in rectum and left colon. Its etiology is controversial, with about 200 cases reported in the literature. This disease is important clinically in that mimics colorectal malignancies. We report a case of colitis cystica profunda localized in rectum treated surgically, its follow-up and review of the literature.

INTRODUÇÃO: A ressecção dos pólipos do intestino grosso é uma medida importante na diminuição da incidência do câncer colorretal. O objetivo do presente estudo é verificar a incidência dos pólipos colorretais, seu tipo histológico, o índice de malignização e de ocorrência de novas lesões nos pacientes submetidos a exame colonoscópico por indicações diversas no Serviço de Coloproctologia do Hospital de Caridade de Florianópolis - SC. MÉTODO: Realizado estudo retrospectivo de 3491 pacientes submetidos à videocolonoscopia no período de janeiro de 1992 a outubro de 2006. Foi avaliada a incidência dos pólipos colorretais de acordo com sexo e idade, tipo histológico e a presença de adenocarcinoma. Foram excluídos deste estudo as síndromes polipóides genéticas e os pólipos não ressecados ou com exames anatomopatológicos incompletos ou extraviados. RESULTADOS: Dos 3491 exames realizados, foram encontrados pólipos em 1046 (29,96%), totalizando 1899 lesões em 865 pacientes. Destes 53,94% eram do sexo masculino, 46,06% feminino e 58,46% tinham mais de 60 anos. Foram avaliados 1579 pólipos colorretais, cujo estudo histopatológico mostrou 31,54% adenomas tubulares, 14,19% adenomas túbulo-vilosos, 1,65% adenomas vilosos, 36,03% pólipos hiperplásicos, 7,85% pólipos inflamatórios e 7,85 % de outros tipos histológicos. Foram observados 24 (1,52%) adenocarcinomas polipóides e 18 (1,14%) adenomas com focos de adenocarcinoma. CONCLUSÃO: A incidência de pólipos nos pacientes estudados foi bastante alta, sendo os adenomas o tipo histológico mais freqüente, com risco de malignização de 1,14% e os adenocarcinomas polipóides 1,52%. Os pacientes portadores de adenomas colorretais devem ser submetidos a exames de controle, devido ao alto índice de ocorrência de novas lesões.

INTRODUCTION: The resection of colorectal polyps is an important role in decreasing the incidence of colorectal cancer. The objective of this study is to determine the incidence of polyps, histological type, malignant transformation rate and the appearance of new polyps in patients that underwent videocolonoscopy for a wide range of indications in the coloproctology service of the Caridade Hospital in Florianópolis - SC. MEHTOD: Retrospective analysis of 3,491 patients submitted to videocolonoscopy from January 2002 to October 2006. The incidence of colorectal polyps by sex and age, histological types and the presence of adenocarcinoma were determined. Familial polypoid syndromes, unresected polyps and patients whose pathology records were incomplete or had been lost were excluded. RESULTS: Polyps were found in 1,046 (29.96%) out of 3,491 videocolonoscopies, totaling 1,899 polyps in 865 patients. 53.94% of patients were male and 46.06% female, and 58.46% of them aged over 60 years. The histological analysis of 1,579 colorectal polyps showed that 31.54% were tubular adenomas, 14.19% tubulovillous adenomas, 1.65% villous adenomas, 36.03% hyperplasic polyps, 7.22% inflammatory polyps and 7.85% of other histological types. 24 (1.52%) polypoid adenocarcinomas and 18 (1.14%) adenocarcinoma focci in adenomas were observed. CONCLUSION: The incidence of polyps in the studied sample was high, with adenoma being the most frequent histological type, with risk of malignization of 1.14% and polypoid adenocarcinomas in 1.52%. Patients with colorectal adenomas must be followed-up due to the increased likelihood of the appearance of new lesions.