Singapore General Hospital
A 34 years old female had presented with a lump at the radial aspect of her thumb. The lump had been increasing in size over the past year, with pain felt when the thumb is flexed/extended. Tingling sensation at the thumb was felt occasionally. What could be the diagnosis?
Figure 1: Longitudinal (LS) view of the lesion. It is well-defined, hypoechoic peripherally with hyperechoic central region, and posterior enhancement seen.
Figure 2. Transverse (TS) view of the lesion.
Figure 3. Colour Doppler demonstrates hypervascularity within the lesion.
Figure 4. Colour Doppler demonstrates hypervascularity within the lesion.
Majority of the peripheral nerve tumours are benign. Some of the more common lesions that can be seen include schwannoma and neurofibroma.
Typical sonographic appearances of a benign peripheral nerve tumour include1,2:
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