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The Korean Journal of Pathology 1996;30(9): 839-842.
Goblet Cell Carcinoid of the Appendix: A case report.
Joo Heon Kim, Ho Lee, So Young Oh, Myoung Jae Kang, Ho Yeul Choi, Dong Geun Lee
Department of Pathology, Chonbuk National University College of Medicine, Chun-ju, Korea.
Carcinoid tumors of the appendix are common incidental findings, but appendiceal tumors with histologic features of both carcinoids and adenocarcinomas are rare, and their biologic behavior and histogenesis are still unclear. We report a case of goblet cell carcinoid of the appendix in a 54-year-old male, who exhibited pain in the right lower abdomen. Microscopically, the tumor contained smooth-bordered, widely separated nests composed of tumor cells with abundant mucin. The principal tumor cell type had a close resemblance to the normal goblet cell. Histochemically, the tumor cells revealed positive reaction for PAS and alcian blue stain. Immunohistochemically, the tumor showed strong reactivity for carcinoembryonic antigen, chromogranin and, neuron specific enolase but none for cytokeratin and epithelial membrane antigen.
Key Words: Goblet cell carcinoid; Appendix; Mucin; Immunohistochemistry
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