Benign peripheral nerve sheath tumor (lumbar subcutaneous region)

Case contributed by Dr Maulik S Patel


Complaining of left posterior lumbar region lump for the last three years. Gradually increasing in size without pain.

Patient Data

Age: 65 years
Gender: Male

There is a well-defined lesion in the region of interest; measuring about 104 x 86 x 45 mm. It is located in the posterior lumbar region in the midline and the left paramedian location. The lesion is in the subcutaneous plane. It abuts skin and tip of the lumbar vertebral spinous process. It is separate from the muscle/ bone/ spinal canal.
The lesion shows hypoechoic heterogeneous echopattern with the presence of few cystic spaces. There is the presence of few lobulations and acoustic enhancement. Few arterial and venous flow signals are present in the lesion.

Case Discussion

Ultrasound shows an encapsulated solid subcutaneous lesion in an elderly male.

The surgical excision of the lesion was done. Histopathology and immunohistochemistry led to a final diagnosis of a benign peripheral nerve sheath tumor.

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Case information

rID: 76171
Published: 17th Apr 2020
Last edited: 18th Apr 2020
Inclusion in quiz mode: Included