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Aregntaffin carcinoid tumor of the rectum
Author(s) -
Yoshida Aichi,
Yano Mikio,
Fujinaga Yutaka,
Sano Chiaki,
Mori Hiroshi,
Yoshida Hiroki,
Fukunishi Ryo
Publication year - 1981
Publication title -
cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.052
H-Index - 304
eISSN - 1097-0142
pISSN - 0008-543X
DOI - 10.1002/1097-0142(19811101)48:9<2103::aid-cncr2820480931>3.0.co;2-#
Subject(s) - argentaffin , submucosa , rectum , ultrastructure , pathology , stroma , medicine , carcinoid tumors , tumor cells , metastasis , anatomy , cytoplasm , rosette (schizont appearance) , biology , immunohistochemistry , cancer , microbiology and biotechnology , cancer research , immunology
A case of rectal carcinoid tumor in a 79‐year‐old Japanese man is reported. The tumor, 1.5 × 0.9 cm, was localized in both mucosa and submucosa of the rectum with neither invasion nor metastasis. Microscopically, neoplastic cells were mainly arranged in rosette‐like and trabecular structures within thin fibrous stroma. Histochemically, both argyrophil and argentaffin reactions were positive. At the ultrastructural level, two distinctive types of neurosecretory granules were found in the cytoplasm of tumor cells.