Schwannoma - thigh
Anterior mid thigh swelling - 3 yrs. No trauma. No significant pain.
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There is a well-defined ovoid lesion in region of interest.
Size - 40 mm ( cranio-caudal ) x 35 mm ( transverse ) x 20 mm ( anteroposterior )
Location - within superficial part of vastus lateralis muscle. It abutts fascia.
- Seperate from bone .
Morphology - hypoechoic without calcification / cystic changes.
- lobulations present.
- Posterior acoustic enhancement present.
- Not significantly compressible.
- There is ecogenic around lesion with echogenic triangular 'cap' at proximal and
distal end of the lesion.
Dopplar - Significant vascularity is noted in lesion.
The lesion is a solid tumor with vascularity involving muscle of thigh. There was echogenic cap at proximal and distal end of lesion which is described in myxoma; however, there were few points againt that diagnosis.
Surgical excision was done.
Histopathological diagnosis - Schwannoma.
(I have seen the histopathology report myself but can not upload because i don't have copyright)