Presentation
Painless swelling of the right arm.
Patient Data
A well-defined ovoid heterogeneously hypoechoic mass with posterior acoustic enhancement of subcutaneous location containing microcalcifications. Areas of internal vascularity within and around the lesion on color Doppler.
Case Discussion
US features highly suggestive of pilomatricoma that was confirmed after surgical excision.
Pilomatricoma is a benign skin tumor arising from the hair cortex cells. The cervico-facial location and female sex are common denominators. Multiple locations and involvement of the limbs are rare.
Ultrasound offers a simple and effective way to propose the diagnosis of pilomatricoma for a cervico-facial subcutaneous lesion. Surgical excision and histopathological examination are required to confirm the diagnosis.
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