Urethral calculi are most frequently found in the prostatic urethra which is more distensible than the distal narrow membranous portion. These are either native-formed in the prostatic urethra or migrated from the upper urinary tract.

The patients with urethral calculi may be completely asymptomatic or may have symptoms of varying severity ranging from hematuria, burning sensation in the urethra on urination, interruption of the urinary stream, pain to acute urinary retention.