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. Sonograms Right and left testes (T) with the mass (M) laterally Left hemiscrotal heterogeneous mass Axial view of the left hemiscrotal mass PDI showing no flow signal in the mass B-mode shoeing the left hemiscrotal mass lateral to the left testis Coronal MRI showing the left hemiscrotal mass (double arrows) next to the left testis (single arrow) Keywords Published on: November 25, 2024
