Carcinoid Tumor of the Gall Bladder.

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Abstract
A classical carcinoid tumor, measuring 11 x 17 mm, was found in a 41-year-old woman in the neck of the gall bladder. The lesion infiltrated the muscular layer of the gall bladder wall. Histologically, the tumor was positive for only Grimelius and chromogranin A stains. In a literature search, approximately half of the tumors reported as gall bladder carcinoid tumor appear to be actually endocrine cell carcinomas, which are completely different from classical carcinoid tumors with respect to size, metastasis and prognosis. These carcinomas should not be termed as carcinoid tumors from both the clinical and histological points of view, and should be clearly distinguished from benign lesions when reported.

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