Gynaecology & Obstetrics 13 yr old child visit OPD with complains of not attaining menarche with karyotype 46 XX. O/E there is clitromegaly, which enzyme is likely deficient? A 17 alpha hydroxylase B 21 alpha hydroxylase C 11 alpha hydroxylase D 3 beta hydroxyteroid dehydrogenase 💡 Explanation 13 yr old child visit OPD with complains of not attaining menarche with karyotype 46 XX. O/E there is clitromegaly, which enzyme is likely deficient? ✓ Correct Answer: B. 21 alpha hydroxylase