Peritoneal benign cystic mesothelioma: a case report and review of the literature. 
Peritoneal benign cystic mesothelioma is a rare tumour of unknown aetiology.  It usually presents with mild abdominal pain and a solid tumour on physical examination.  The differential diagnosis with solid abdominal tumours is difficult.  Computed tomography, magnetic resonance imaging as well as aspiration cytology are useful in suggesting the pre-operative diagnosis.  We present one case report and discuss this entity.