Plantar fibromatosis

Case contributed by Mohamed Salah Ayyad
Diagnosis almost certain


Painful swelling of the sole.

Patient Data

Age: 30 years
Gender: Male

Multiple well-defined oblong-shaped encapsulated solid lesions are epicentered on the plantar fascia. They exhibit hypoechoic texture and no internal vascularity by color or power Doppler studies.

Case Discussion

Plantar fibromatosis is one of the common lesions of the sole. By ultrasound, it usually appears as oblong or fusiform-shaped nodules with an isoechoic or hypoechoic texture that may show an inhomogeneous structure with few echogenic septa. Some of the lesions may show internal vascularity. The classic-appearing nodules are well-circumscribed, while larger ones may acquire aggressive features such as indistinct margins and deeper extension.

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