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Prevalence of clinical signs in pediatric and adult population with Klinefelter Syndrome* (KFS)
| Pediatric KFS (n=17) | Adult KFS (n=27) | |
|---|---|---|
| Small testes | NA | 16 (59.3%) |
| Cryptorchidism | 3 (17.6%) | 1 (3.7%) |
| Gynecomastia | 0 (0%) | 8 (29.6%) |
| Micropenis | 6 (35.3%) | 3 (11.1%) |
| Dysmorphism | 4 (23.5%) | 0 (0%) |
| Cardiac anomalies | 5 (29.4%) | 0 (0%) |
| Subnormal intelligence | 7 (58.3%) | 5 (41.6%) |
| Behavioral problems | 13 (76.5%) | 6 (22.2%) |
*From available data; NA=Not available
