UKMLA PLAB AMC USMLE Prometric MCQ

Question Number 0894
Question:
A 16 year old youth is brought to the physician by his mother. She claims he has been very depressed lately and attributes this to teasing from school friends because he is so tall.Since he is usually rather impulsive and tends to have bursts of sudden anger ,she is worried he may retaliate violently and get 'into a big fight'. During his childhood he had severe language deficits and very significant academic difficulties .The mother also stated that a genetic study carried out during childhood showed the karyotype to be 47xxy. During the course of examination, he is noted to have a small testes . This boy most likely has

a) Down's syndrome
b) Klinefelter's syndrome
c) Turner's syndrome
d) Edward's syndrome
e) Marfan's syndrome