[Primary adenocarcinoma of the navel after a seemingly harmless discharge of many years' duration].

A woman aged 49 complained of longstanding umbilical discharge. In the floor of the navel a granulomatoid lesion was observed, which histopathologically proved to be a well-differentiated adenocarcinoma. This was thought to be a primary tumour as extensive investigation revealed no other primary tumour. The umbilical area was excised. Colonic malrotation was seen as well as a Meckel's diverticulum. The patient recovered completely.