"The surgical removal of the penis is at the best of times a dangerous practice, rarely performed even by doctors: An attack by the renowned Brazilian fishlet known as 'candiru,' which likes to swim up a man's urine stream and lodge in the urethra with a ring of retrorse spines preventing its removal, is one of the very rare circumstances in which doctor (sic) will perform the operation, known as a peotomy."
"The surgical removal of the penis is at the best of times a dangerous practice, rarely performed even by doctors: An attack by the renowned Brazilian fishlet known as 'candiru,' which likes to swim up a man's urine stream and lodge in the urethra with a ring of retrorse spines preventing its removal, is one of the very rare circumstances in which doctor (sic) will perform the operation, known as a peotomy."
The Professor and the Madman, Simon Winchester