Testicular Tumors

Abstract

Pediatric testicular tumors are rare, accounting for 2% of solid malignant tumors in boys. Pediatric testicular tumors arise in two peaks of generation: the infant period before 3 years of age and the young adult period at approximately 20-30 years of age. Prepubertal testicular tumors are mainly divided into two categories: germ cell tumors and non-germ cell tumors. According to the prepubertal testis tumor registry, yolk sac tumors and teratomas account for 62% and 23% of prepubertal primary testicular tumors, respectively. Taskinen reported that 77% of prepubertal primary testicular tumors are benign, whereas only 38% of postpubertal tumors are benign. On the other hand, as a secondary testicular tumor, leukemia and malignant lymphoma are important entities, accounting for 2-5% of all testicular tumors. Ultrasonography is the most useful examination for the diagnosis of testicular tumors. Malignant tumors and postpubertal testicular tumors should be treated by radical inguinal orchiectomy. In this chapter, the characteristics of the main testicular tumors are described.