原发性生殖器官外绒毛膜上皮癌(绒癌)非常少见,男女均可发生,然以男性为多);可见于前列腺、肝、肺、膀胱、食道、鼻及胃,其中原发于胃者最多见。胃恶性肿瘤常见者为癌及恶性淋巴瘤。次为浆细胞瘤、肉瘤及类癌,而绒癌最少。1976年前世界文献中仅报道27例,其后有少数报告,我国则尚未见报道。现报告一例。 Primary genital external choriocarcinoma (velvet cancer) is very rare and can occur in both males and females, but is more common in men; visible in the prostate, liver, lung, bladder, esophagus, nose, and stomach, with primary origin in the stomach Most common. Common gastric cancer is cancer and malignant lymphoma. Secondary plasmacytoma, sarcoma, and carcinoid, while choriocarcinoma is the least. In the world literature before 1976, only 27 cases were reported, followed by a few reports, and our country has not yet reported. One case is now reported.