Malignant carcinoid of the Ampulla of Vater.
D001650:Bile Duct Neoplasms; D002276:Carcinoid Tumor; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary; D009456:Neurofibromatosis 1