The post-cystectomy pseudotumour sign: MRI appearances of a modified chronic pelvic haematoma due to retained haemostatic gauze

The magnetic resonance imaging (MRI) findings of Eve men who had incidental similar pelvic masses identified after radical cystectomy are presented. I n all patients the haemostatic agent Kaltostat had been used, In one patien t, surgical resection of the mass was performed and histological evaluation showed a foreign body inflammatory reaction within a chronic haematoma. Th e differentiation between this lesion and other post-operative collections or tumours is discussed. Naik, K.S. ct al. (2000). Clinical Radiology 55, 9 70-974. (C) 2000 The Royal College of Radiologists.