Case Review: Ultrasound of Testicular Epidermoid Cyst - a podcast by Daniel J. Kowal, MD

In this radiology lecture, we discuss the ultrasound appearance of testicular epidermoid cyst.

Key points include:



* Testicular epidermoid cyst is a rare, benign, intratesticular neoplasm.

* Most common in 2nd-4th decades, typically presents as a painless mass.

* Lamellated, onion-like, bull’s-eye appearance: Alternating hyperechoic and hypoechoic concentric rings.

* Appearance secondary to cyst filled with layers of keratin and lined with keratinizing squamous epithelium.

* Non-vascular and sharply marginated.

* Nonenhancing on MRI.

* Important to recognize preoperatively because may be treated with conservative surgery.

* Management somewhat controversial as originally diagnosed with orchiectomy.

* Increasingly treated with enucleation if frozen sections of mass are consistent and tumor markers are negative.



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