Croom notes a case of retention of urine from laceration of the vagina during first coitus.

Foucard reports a case of retention of urine in a young girl of nineteen, due to accumulation of the menstrual fluid behind an imperforate hymen.
The accumulation of urine in cases of ischuria is sometimes quite excessive.

De Vilde speaks of 16 pints being drawn off.

Mazoni cites a case in which 15 pounds of urine were retained; and Wilson mentions 16 pounds of urine being drawn off.

Frank reports instances in which both 12 and 30 pounds of urine were evacuated.