A 5-year-old boy has a history of recurrent urinary tract infections. Urine cultures have grown Escherichia coli, Proteus mirabilis, and Enterococcus. Physical examination now shows an abnormal constricted opening of the urethra on the ventral aspect of the penis, 1.5 cm from the tip of the glans penis. There also is a cryptorchid testis on the right and an inguinal hernia on the left. What term best describes the child's penile abnormality?