May Be Caused by

Chromosome 18:del(18p) syndrome

Chromosome 18p2 syndrome

Chromosome XY gonadal dysgenesis

De Sanctis-Cacchione syndrome

Dyskeratosis congenita

Kallmann syndrome

Klinefelter syndrome

Male pseudohermaphroditism

Myotonic dystrophy

Polyorchidism

Prader-Willi syndrome

Renpenning syndrome

Rudimentary testes with Leydig cell deficiency

Schwartz-Jampel syndrome

Trisomy 1 syndrome

Trisomy 21

Walker-Warburg syndrome

Wiedemann syndrome

XXXY syndrome

XXYY syndrome