Clinical Presentation of Klinefelter's Syndrome: Differences According to Age

Table 2

Prevalence of clinical signs in pediatric and adolescent patients with Klinefelter’s syndrome.

	Prepubertal (𝑛=18)	Pubertal (𝑛=26)
Neuro-developmental disorders	8 (44.4%)	14 (53.8%)
Small testes	3 (16.7%)	20 (76.9%)
Cryptorchidism	10 (55.5%)	6 (23.0%)
Gynecomastia	0 (0%)	11 (42.3%)
Small penis	3 (16.7%)	3 (11.5%)
Prenatal diagnosis	4 (22.2%)	0 (0%)
Pie bot	1 (5.5%)	0 (0%)
Varicocele	3 (11.5%)	3 (11.5%)
Dysmorphisms	1 (3.8%)	1 (3.8%)