Spindle cell sarcoma - pelvis

Case contributed by Dr Bahman Rasuli

Presentation

Right hip pain and immobility

Patient Data

Age: 40 years
Gender: Female
MRI

There is a 5.5 x 11 x 21 cm extensive large infiltrative soft tissue mass involving the gluteus maximus, medius, minimus and adductor group muscles.

The right sciatic nerve also show abnormal intrasubstance increased signal and caliber due to nerve involvement.

Case Discussion

This is a pathologically-proven case of low-grade spindle cell sarcoma.

Microscopic:

Sections show neoplastic tissue composed of a diffuse proliferation of spindle cells with eosinophilic cytoplasm, prominent nucleoli, minimal atypia and rare mitotic figures (1-2/10 HPF) growing in long sweeping fascicles and infiltrating the skeletal muscle.

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Case information

rID: 63790
Published: 21st Oct 2018
Last edited: 22nd Oct 2018
Inclusion in quiz mode: Included
Institution: Jame Jam Imaging Center

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