Primary paraganglioma of urinary bladder: Case series and review of the literature

Paragangliomas of the urinary bladder (PUB) are uncommon and represent less than 1 per cent of all bladder tumours. They can manifest with classic symptoms and signs similar to those of adrenal pheochromocytoma, but the clinical presentation could be nonspecific. Preoperative diagnosis of this uncommon condition is difficult but important, owing to the potential for catecholamine crisis during surgery. In the present study, we review our experience of four cases of PUB and review the literature on this condition.