Leydig Cell Testicular Tumour Presenting as Isosexual Precocious Pseudopuberty in a 5 Year-old Boy with No Palpable Testicular Mass.

Leydig cell testicular tumors are very rare in children and cause isosexual precocious puberty. Palpable testicular mass or asymmetric testes are common findings on routine examination. We report on a 5-yr-old boy with a Leydig cell tumor of the testis presented with isosexual precocious puberty but no scrotal palpable mass. To our knowledge, this is the first reported Leydig cell tumor in a boy without palpable scrotal mass.