Composite glandular-endocrine cell carcinoma of the stomach. Report of two cases with goblet cell carcinoid component.
Composite glandular-endocrine cell carcinoma (CGECC) is recognized as a special type of gastric tumor composed of ordinary adenocarcinoma and neuroendocrine tumors. Goblet cell carcinoid (GCC) is a well-established type of appendiceal carcinoid, but the GCC component has not been well delineated in CGECC of the stomach. We report on two gastric CGECCs with a GCC component, analyzing the histologic components by immunohistochemistry. On initial biopsy, both cases were diagnosed as signet-ring cell carcinoma. However, the resected tumors consisted of three components: signet-ring cell carcinoma, GCC, and glandular adenocarcinoma. Although some signet-ring carcinoma cells and goblet carcinoid cells were indistinguishable by hematoxylin and eosin staining, E-cadherin immunostaining disclosed a definitive difference regarding the staining pattern in these cells. Both patients are well, with no recurrent tumor for about 10 years of follow-up. CGECC with a GCC component may have been confused with conventional adenocarcinoma with signet-ring cells. In cases of advanced signet-ring cell carcinoma with good prognosis, the possibility of such CGECC has to be considered.
Fujiyoshi
Yukio
Y
Department of Pathology, Nagoya City University Medical School, Mizuho-ku, Nagoya 467-8601, Japan. yfuji@med.nagoya-cu.ac.jp
Kuhara
Hajime
H
Eimoto
Tadaaki
T
D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor / Q000378:metabolism; D015820:Cadherins / Q000378:metabolism; D002276:Carcinoid Tumor / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D018279:Carcinoma, Signet Ring Cell / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D016609:Neoplasms, Second Primary; D013274:Stomach Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome
D014408:Biomarkers, Tumor; D015820:Cadherins