CT Finding of Small Cell Carcinoma of the Rectum: A Case Report
نویسندگان
چکیده
neuroendocrine cells. Neuroendocrine cells are distributed throughout the gastrointestinal tract, pancreas, lung, thyroid, adrenal gland, and many other organs (1). The gastrointestinal tract has the largest population of neuroendocrine cells, but neuroendocrine malignancies are rare in the colon or rectum (2), accounting for less than 1 percent of all colorectal cancer (3). A PubMed search revealed about twenty case reports for small cell carcinoma of the rectum in the English literature. Like its pulmonary counterpart, extrapulmonary small cell carcinoma is aggressive, with rapid local progression and early regional and distant spread. Therefore, the prognosis of patients with this neoplasm is generally poor, especially in extrapulmonary small cell carcinoma involving the gastrointestinal tract (4, 5). This report presents computed tomographic (CT) images, a laparoscopic biopsy, and an excisional biopsy of a case of small cell carcinoma of the rectum.
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