A Large Extratesticular Epidermoid Cyst

Clinical History

A 74-year old man presented with a fast-growing painful swelling next to the left testicle.

Case Description

Ultrasound performed, using a 15 MHz linear transducer, revealed a 7 cm heterogeneous mass adjacent to the left testis. The mass contained numerous anechoic patches with no evidence of internal vascularity.

Diagnosis/ Discussion/ Treatment/ Follow up

The patient was referred to have an MRI to help characterise the scrotal mass. The MRI revealed the left paratesticular mass to have appearances as the adjacent testis and was unable to provide detailed characteristics of the mass.

The patient had left orchiectomy and the samples were examined histologically. Histology confirmed the paratesticular mass to contain keratinised stratified squamous epithelium with a diagnosis of an epidermoid cyst.