De novo posttransplantation nonlymphoproliferative malignancies in liver transplant recipients.

The risk of developing de novo malignancies after liver transplantation is around 1% per year. The incidence varies from 3% to 15%; it is greater than that in the general population. The potential causes for cancer after solid organ grafting are: chronic immunosuppression and human herpes viral infection. The objective of this paper was to review the medical literature about the subject to verify the incidence of de novo malignancies in our service. We performed retrospective analysis of the medical files of 325 successive patients undergoing orthotopic liver transplantation from September 1991 to December 2006. We analyzed the type of tumor, the risk factors, the treatment modality, and the patient survivals. Recurrences of hepatocellular carcinoma were excluded. There were 5 (1.54%) men of average age 50.2 years, and an 80% mortality rate. Their survival time was affected by the nature of the tumor and by the late manifestations of intestinal obstruction allowing adequate surgical treatment. Four of the patients displayed heavy alcohol and tobacco consumption before transplantation. Screening for premalignant lesions must be strongly encouraged to achieve better postoperative results.