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SBA 4 Posted by PAUL A.


Which one does NOT influence sexual development in utero?

a)     Genes present on the sex chromosomes

b)    Ovarian function                                  

c)     Testicular function

d)    Sensitivity of end-organs to sex hormones




Which one is not a recognized cause of abnormal sexual development in-utero?


a)     Sex chromosome abnormalities


b)    Biochemical testicular failure


c)     Biochemical ovarian failure                 


d)    Excessive androgen production


e)     Deficient production of Mullerian inhibitory factor



Congenital adrenal hyperplasia

a)     Is the commonest cause of male intersex

b)    Affects 1 in 1500 live births

c)     Is an X-linked recessive disorder

d)    Is most commonly caused by 21-hydroxylase deficiency                   

e)     Is most commonly caused by 17-alpha-reductase deficiency




Which biochemical abnormality is not typical of congenital adrenal hyperplasia?


a)     Raised 17-hydroxyprogesterone levels


b)    Raised progesterone levels


c)     Raised oestradiol levels                                               


d)    Raised testosterone levels


e)     Raised androstendione levels




Congenital adrenal hyperplasia may be caused by


a)     11-beta hydroxylase deficiency                                   


b)    5-alpha reductase deficiency


c)     Cholesterol esterase deficiency


d)    End-organ insensitivity to androgens


e)     46XX/46XY mosaicism


Question 6


Congenital adrenal hyperplasia


a)     Does not affect males


b)    Is more difficult to recognize in females


c)     Can present with precocious puberty in males                         


d)    Typically presents with delayed puberty in males


e)     Results in electrolyte abnormalities secondary to high levels of aldosterone 


Question 7


Typical features of congenital adrenal hyperplasia include


a)     Fluid retention and cardiac failure


b)    Delayed puberty in males


c)     Absent uterus and fallopian tubes in females


d)    Absent vagina in females


e)     Vomiting and failure to thrive          


Question 8


Which one is typical of congenital adrenal hyperplasia?


a)     Hypospadias


b)    Clitoral enlargement                            


c)     Low vaginal atresia


d)    Blind-ending vagina


e)     Undescended testes               


Question 9


Which biochemical abnormality is not typical of congenital adrenal hyperplasia?


a)     Raised cortisol             


b)    Raised ACTH


c)     Raised progesterone


d)    Raised 17-hydroxy progesterone


e)     Raised androstendione


Question 10


Electrolyte abnormalities in congenital adrenal hyperplasia are characterized by


a)     Raised sodium and raised potassium


b)    Raised sodium and raised chloride


c)     Low sodium and raised potassium                  


d)    Low sodium and raised chloride


e)     Normal sodium and normal chloride with low potassium


Question 11


A newborn baby has been diagnosed with congenital adrenal hyperplasia. Treatment typically involves


a)     Mineralocorticoid replacement


b)    Corticosteroid replacement                              


c)     Growth hormone replacement


d)    Oestrogen replacement around the age of puberty


e)     ACTH injections

Posted by anitha  Y.

1-b,  2- c,  3-d,  4-c,  5-a,  6-c,  7-e,  8-b,  9-a,  10-c,  11-b.




1)   B

2)   C

3)   D

4)   C

5)   A

6)   C

7)   E

8)   B

9)   A

10)                  C

11)                  B