Correlation of Scrotal Ultrasound Findings with Pathological Features in Intratesticular Epidermoid Cyst, A Prepubertal-Type Teratoma

Intratesticular epidermoid cysts are rare benign tumors of the testes. Based on the World Health Organization classification of the tumors of the urinary system and male genital organs (2016), testicular epidermoid cysts are classified as prepubertal-type teratomas. We herein present the case of a 30-year-old male suffering from a left testicular mass for three months. Physical examination confirmed a 2-cm, hard, nontender testicular mass in the left scrotum. Ultrasonography revealed a 2.1 × 2.1-cm solid mass without hypervascularity in the lower testicular pole. Serum α-fetoprotein and human chorionic gonadotropin levels were normal. Orchidectomy was performed based on the preoperative diagnosis of benign left testicular tumor, which was pathologically confirmed as intratesticular epidermoid cyst, a prepubertal-type teratoma. We also review the literature and discuss the correlation of scrotal ultrasound findings with pathological features.