소개글
[의학과][비뇨기과] Cryptorchidism에 대한 자료입니다.
목차
1.Introduction
2.Normal Testicular Descent
3.Causes & Risk factors
4.Retractile Testis
5.Diagnosis
6.Treatment
본문내용
Movement occurs in two phases
The first phase
entrance of the inguinal canal
controlled by anti-müllerian hormone
The second phase
testes move through the inguinal canal into the scrotum
dependent on androgens
With inguinal testes, further descent occurs in first 6 months of life
Due to postnatal surge of gonadotropin and testosterone
Most full-term infant boys: idiopathic
Premature infants: born before descent of testes.
Environmental chemicals: endocrine disruptors
interfere with normal fetal hormone balance
alcohol , gestational diabetes, caffeine
A small percentage found to be familial
occurs at more commonly in congenital malformation
Prader-Willi syndrome, Noonan syndrome
the most common diagnostic dilemma
more common than truly undescended testes
do not need any treatment
as cremaster muscle relaxes or contracts, the testis moves
cremasteric reflex is much more active in infant boys