Presentation
Presented with painless slowly progressive swelling on back.
Patient Data
Age: 40 years
Gender: Male
From the case:
Epidermal inclusion cyst
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Sharply defined heterogenous hypoechoic cutaneous lesion bulging into the subcutaneous tissues.
Distal acoustic enhancement.
No internal vascularity.
Case Discussion
Epidermal inclusion cyst is a cutaneous lesion that presents as a painless swelling mostly commonly in hairy areas such as the scalp, face, trunk etc. Color Doppler shows no vascularity unless the cyst is ruptured. Twinkle artefact on color Doppler ultrasound is common and highly specific.
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