title: Intratesticular epidermoid cyst masquerading as testicular torsion.
abstract: Epidermoid cysts are benign tumors that comprise approximately 1% of all testicular masses. They usually present as painless masses that can be identified on scrotal ultrasound as well-demarcated intratesticular lesions with mixed echogenicity. This case report describes a rare presentation of an extremely large intratesticular epidermoid cyst with clinical and radiologic findings more consistent with testicular torsion. The sizeable cyst obliterated the surrounding testicular parenchyma, causing it to appear on scrotal Doppler ultrasound as a testicle devoid of blood flow. This obliteration also resulted in failure to identify a testicular mass on physical examination or imaging. The current literature contains previous reports of extratesticular epidermoid cysts presenting as torsion; however, this is the first report of an intratesticular epidermoid cyst presenting in this manner. Though smaller cysts may be managed effectively with testicular-sparing surgery, optimal management of a cyst this size requires orchiectomy.
authors.affiliation: Baylor College of Medicine, Texas Medical Center, Houston, TX and Rice University, Houston, TX.
authors.forename: Jeremy
authors.initials: J
authors.lastname: Slawin
authors.affiliation: Vanguard Urologic Institute at Memorial Hermann Medical Group, Houston, TX, Baylor College of Medicine, Texas Medical Center, Houston, TX, and Memorial Hermann Hospital, Texas Medical Center, Houston, TX.
authors.forename: Kevin
authors.initials: K
authors.lastname: Slawin
keywords: Acute testicular pain; Doppler ultrasound; Epidermoid cyst; Intratesticular; Testicular torsion