Cancer Incidence in Living Liver Donors After Donor Hepatectomy.

Living liver donors (LLDs) are screened for transmissible diseases including cancer. We investigated the actual cancer incidence of LLDs compared with a matched healthy control group from the general Korean population using data from the Korean National Health Insurance Services (NHIS). A total of 12,372 LLDs who donated a liver graft between 2002 and 2018 were registered in the Korean Network for Organ Sharing. They were compared to a matched healthy control group selected from the Korean NHIS. Cancer diagnosis was identified in 175 LLDs (1.4%) and 1,014 controls (0.8%). Compared to the healthy control group, the incidence rate ratio of liver and thyroid cancer in the LLD group were significantly higher at 18.30 and 1.39, respectively. The incidences of 11 other specified cancers were not different between the two groups. The present study suggests that LLD after donor hepatectomy may require medical surveillance, especially for liver cancer.