Primary non-Hodgkin's lymphoma of the bladder: report of two cases and review of the literature.

Malignant lymphoma of the bladder is a rare entity which usually presents with nonspecific urologic symptoms such as dysuria, haematuria, nocturia and abdominal pain. Urologists should be familiar with the management of this disease as surgery alone often is not adequate treatment. We present herein 2 cases of non-Hodgkin's lymphoma (NHL) of the bladder and discuss their clinical-pathological features and management.