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NBME 23 Answers

nbme23/Block 2/Question#36 (23.4 difficulty score)
A newborn has external genitalia that appear ...
Hyperplastic fetal adrenal glands🔍

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,6XX4 SDD ued to excseevis nda poeipnrariapt puxoerse ot gireanondc siodesrt giurdn ryael tsaotnige i.e.( lonicnatge raelnda ieh.splapr)ya

jboud86  I'm just adding the page number from FA 2019 to this comment. FA 2019 page 625. +3  
leaf_house  FA 2020 p 639 +  

Boards and Beyond has a good flow chart for ambiguous genitalia. If the patient is XX - do they have mullerian structures? If yes, it's CAH (increased androgens). If they patient is XY - do they have mullerian structures? If yes, gonadal dysgenesis (no MIH). If no, then it could be due to abnormal androgen receptors, CAH, or low DHT.

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