A 4 year-old boy visits you in the clinic with his mother for evaluation of an increasing size of his genitalia. She tells you that her boy had aggressive behavior for the last six months. Besides progressive increase of the length of his penis, he has excessive pubic hair. On examination, his pulse is 80/min. and blood pressure is 140/92 mmHg. Other than genital findings, the rest of examination is normal. You send blood and urine samples for lab testing.
What is the most likely initial diagnosis of this boy’s condition?
A- Conn syndrome
B- C-21 hydroxylase deficiency
C- C-11 hydroxylase deficiency
D- C-17 hydroxylase deficiency