Primary carcinoid of the kidney: light and electron microscopic study.
A case of an asymptomatic primary renal carcinoid tumor in a 61-year-old male is presented. The tumor was large with extensive hemorrhagic necrosis. Metastases were present in para-aortic lymph nodes. Ultrastructurally, dense core granules and masses of cytoplasmic filaments, including tonofilaments, were seen. The granules were faintly argyrophilic. The relevant literature is reviewed.
D001079:Apudoma / Q000648:ultrastructure; D002276:Carcinoid Tumor / Q000648:ultrastructure*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D003599:Cytoskeleton / Q000648:ultrastructure; D006801:Humans; D007680:Kidney Neoplasms / Q000648:ultrastructure*; D008207:Lymphatic Metastasis; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged