Epidermal inclusion cyst
Presented with a non-healing surgical wound and local discharge from a recent surgically excised lesion in the right scapular region.
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There is scar/tract from the skin to the subcutaneous lesion/area. This tract enters an encapsulated lesion of about 13 x 10 x 6 mm. There are internal linear short echoes in the lesion. There is a tiny tract from this lesion towards the skin. There is perifocal echogenic fat with hypervascularity. There is no extension to the underlying muscle.
The patient had a non-painful lesion in right scapular region for last few years. The lesion became painful and was operated under local anesthesia. The patient had the persistent non-healing wound and local discharge for a month and ultrasound was requested. Ultrasound shows a tiny tract from the residual lesion to the skin, which is punctum and favors epidermal inclusion cyst. Re-excision of the residual lesion was done and histopathology revealed epidermal inclusion cyst.