Abstract
A relative rare case of a cytomegalovilus (CMV) infectious disease is reported. Recently, CMV infection has attracted increasing clinical attention due to an increase in susceptible hosts, and CMV infections are usually manifested by serious symptoms. This patient showed multiple fistulae in the lower gingiva and the enlargements of gingiva and submandibular lymph nodes, but no other serious systemic complications. Cytomegaloviral infection caused intractable fistula formation in an immunoconpromised host.