The article presents a clinical case of a 53-year-old patient admitted to the hospital with a suspected testicular tumor. Preliminary diagnosis: congenital anomaly. Adenomatoid tumor of the undescended right testicle (inguinal cryptorchidism on the right). Polyorchism. Abdominal cryptorchidism of the accessory right testicle. Irreducible indirect inguinal hernia on the right. Alpha fetoprotein, HCG, LDH indices are normal, no metastases were found. Orchofuniculectomy on the right, herniotomy, local tissue rearrangement were performed. The accessory testis was classified as Type A1 by Bergholz R.