Perifascial Nodular Fasciitis Adjacent to the Tensor Fasciae Latae: Ultrasound and MRI Findings in a Rare Hip Presentation

Nodular fasciitis is a benign, self-limited myofibroblastic proliferation that can mimic soft-tissue sarcoma because of rapid growth. It most often affects the upper extremities, while presentation around the hip remains uncommon. We report a 29-year-old woman who noticed a recently appearing, painless lateral hip mass that prompted medical consultation. Ultrasound and magnetic resonance imaging helped localize and characterize the lesion and guided biopsy. Histology confirmed nodular fasciitis. This case highlights the value of imaging-pathology correlation in recognizing this benign entity and avoiding unnecessary aggressive treatment.