Primary pulmonary choriocarcinoma--a series of 7 cases.

Primary pulmonary choriocarcinoma is a rare manifestation of extra-genital malignant germ cell tumour. This is a report of seven such cases, seen in autopsy and surgical materials in a span of 20 years. The age range was from 25 to 60 years, affecting six women and one male. These are aggressive tumours requiring prompt therapy. Only one among the seven survived.