[Acute caesarian section due to renal tumour with spontaneously emerged perirenal haematoma].

A primipara at term was admitted to the labour ward with spontaneously emerged severe abdominal pain in the right flank and kidney. The patient was not known with any obstetric or urologic conditions. An acute caesarian section was performed due to the pain and pathological results of the cardiotocography, and a healthy child was delivered. During surgery, a haematoma was detected in the retroperitoneal space. A computed tomography (CT) of abdomen showed a Bosniak type IV tumour with surrounding haematoma in the kidney. Due to persistent tumour on control CT after six weeks, a laparoscopic nephrectomy was performed, and a renal cell carcinoma could be seen.