[Urachal cyst. Current status of the problem].

Attention is focussed on urachal cysts, an uncommon disease entity recognized in 1 out of 5,000 autopsies performed in children. Two male patients, aged 47 and 30 years are described herein. Ultrasonography is considered to be necessary for diagnosing this disease. Treatment by complete removal of the cyst is advocated while others suggest the possibility of a more aggressive approach: removal combined with resection of a bladder anuria to avoid recurrence or development of a carcinoma.