18/02/2026
18.02.2026
Woman, forty years has a small nodule over upper sternal skin. It is not adherent to bone.
USG showed a round 2.1 cms diameter hypoechoic round lesion just beneath the epidermis. It has well defined outline and onion peel appearance. No internal vascularity.
Findings consistent with subcutaneous Epidermoid cyst.
Onion peel appearance is due to layers of keratin deposits.