Cryptorchidism is a medical term referring to absence from the scrotum of one or both testes. This usually represents failure of the testis to move, to "descend," during fetal development from an abdominal position, through the inguinal canal, into the ipsilateral scrotum. About 3% of full-term infant boys are born with at least one undescended testis, making cryptorchidism the most common birth defect of male genitalia.

A testis absent from the normal scrotal position can be:

1. found anywhere along the "path of descent" from high in the posterior (retroperitoneal) abdomen, just below the kidney, to the inguinal ring;
2. found in the inguinal canal;
3. ectopic, that is, found to have "wandered" from that path, usually outside the inguinal canal and sometimes even under the skin of the thigh;
4. found to be undeveloped (hypoplastic) or severely abnormal (dysgenetic);
5. found to have vanished (also see Anorchia).

About two thirds of cases without other abnormalities are unilateral; 1/3 involve both testes. In 90% of cases an undescended testis can be palpated (felt) in the inguinal canal; in a minority the testis or testes are in the abdomen or nonexistent (truly "hidden").

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cryptorchidism (kati) Fri, 25 Dec 2009 23:54:26 -0000
holy crap this creamy corn casserole kinda rules
@hollygorock jimmy thought he was trying to scam/was too shady :(
cryptorchidism (kati) Fri, 25 Dec 2009 22:24:21 -0000
@hollygorock jimmy thought he was trying to scam/was too shady :(
@cryptorchidism I guess the craigslist guy didn't work out?
hollygorock (Nick Williams) Fri, 25 Dec 2009 21:53:06 -0000
@cryptorchidism I guess the craigslist guy didn't work out?
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