Role of Ultrasonography and Strain Elastography Findings in Peripheral Nerve Sheath Tumor

Peripheral nerve imaging science is rapidly advancing, for early and robust diagnosis of many ill-health conditions, especially in detection of tumors. Radiological imaging techniques provide dynamic, real-time assessment of anatomy which either can help in diagnosis or prognosis in peripheral nerve disorders. Peripheral nerve tumors are often evaluated with magnetic resonance imaging, although there are many advantages offered with ultrasonography (USG). Strain elastography (SE), another technique, is well known for the diagnosis of soft-tissue tumors and is used to evaluate tissue stiffness. Hard lesions are more resistant to extrinsic compression and show smaller strain, whereas soft lesions show larger strain. The narrative review provides insight in functioning and utility of USG and SE techniques in peripheral nerve sheath tumor diagnosis.