Clinical features of a Chinese female nongestational choriocarcinoma cohort: a retrospective study of 37 patients

BACKGROUND: Choriocarcinoma is a rare malignant neoplasm, which is classified as either gestational choriocarcinoma or nongestational choriocarcinoma. The purpose of this study was to examine the clinical characteristics of Chinese female nongestational choriocarcinoma patients and discuss our experience in treating this rare disease. RESULTS: We conducted a single-center retrospective study on a sample of 37 nongestational choriocarcinoma patients who were diagnosed and treated at Peking Union Medical College Hospital from March 1982 to March 2020. Their demographic, clinical, laboratory, and therapeutic data were collected. Detailed information was available for all 37 individuals in our sample. The primary lesions included 34 in the ovaries, 2 in the pituitary and 1 in the stomach. The median age of onset was 22 years, and the median follow-up period spanned 41 months. The lungs (40.5%) were the most commonly observed metastatic site. All subjects were treated with surgery and multidrug chemotherapies, and a median of 4.0 courses was required to achieve complete remission. The overall complete response rate, relapse rate, and 3-year and 5-year survival rates were 81.1%, 16.7%, 80.0%, and 75.5%, respectively. CONCLUSIONS: Nongestational choriocarcinoma can be managed well using surgery and multidrug chemotherapies, but the overall outcome of nongestational choriocarcinoma is still worse than that of gestational choriocarcinoma. Mixed nongestational choriocarcinoma seems to have similar therapeutic outcomes as pure tumors.