title: Concurrent occurrence of adenocarcinoma and carcinoid tumor in the stomach: a composite tumor or collision tumors?
abstract: A morphologic curiosity is presented in a polypoid gastric tumor combined with adenocarcinoma and carcinoid tumor. It is likely that those two represent a composite tumor; however, the authors think it is more likely that they are two concurrent, independent collided tumors.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000648:ultrastructure; D002276:Carcinoid Tumor / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009378:Neoplasms, Multiple Primary / Q000473:pathology* / Q000648:ultrastructure; D013274:Stomach Neoplasms / Q000473:pathology* / Q000648:ultrastructure