Erschienen in:
28.07.2018 | Test Yourself: Answer
Enlarging right thigh mass
Answer – Ischemic fasciitis
verfasst von:
Ban Sharif, Asif Saifuddin
Erschienen in:
Skeletal Radiology
|
Ausgabe 1/2019
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Excerpt
The initial MRI demonstrates a subcutaneous mass overlying the posterior facet of the right greater trochanter, in broad communication with the iliotibial band. It is of isointense T1-weighted signal compared to skeletal muscle (Fig. 1a), hyperintense signal on STIR (Fig. 1b), and demonstrates peripheral enhancement post-contrast with a central stellate, linear region of non-enhancement (Fig. 2). Ultrasound demonstrates an avascular hypoechoic mass (Fig. 3). A photomicrograph (4× H&E) obtained after needle biopsy shows fibrous tissue with ischemic-type necrosis, granulation tissue, and degenerative cytological atypia (Fig. 4). A follow-up MRI study performed 21 months later demonstrated complete resolution of the mass with minor residual subcutaneous scarring (Fig. 5). …