An embryonal carcinoma that arises from the testis during childhood. The disease is MONDO_0003788 (childhood embryonal testis carcinoma). Also known as: childhood embryonal carcinoma of testis, childhood embryonal carcinoma of the testis, childhood testicular embryonal carcinoma, paediatric embryonal carcinoma of testis, paediatric embryonal carcinoma of the testis, paediatric testicular embryonal carcinoma, pediatric embryonal carcinoma of testis, pediatric embryonal carcinoma of the testis.