[Lipoma: a rare differential gastrointestinal tumor diagnosis].

This is a case report of a female patient who during a routine follow-up after a gastrectomy showed a tumor of the ileo-cecal valve, which--according to all radiologic diagnostic procedures--was highly suspected to be a malignant tumor. However, the histologic diagnosis was benign lipoma. The incidence and the characteristics of gastrointestinal lipomas in the actual literature will be reviewed.