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Oncology & Cancer Care

Malignant Peripheral Nerve Sheath Tumor (MPNST), Sciatic Nerve

ICD-10 Code
C47.2

Highly malignant sarcoma arising from a peripheral nerve, often associated with Neurofibromatosis type 1 (NF1).

Clinical Presentation & Protocol

Patient Usually Complains Of

Patient presents with a progressive, deep-seated, painful mass in the posterior thigh/gluteal region. Symptoms include radiating neuropathic pain along the sciatic distribution, progressive motor weakness, and sensory deficits in the lower extremity. History significant for [NF1/prior radiation therapy]. Duration of symptoms: [Time]. Associated symptoms include nocturnal pain and rapid interval growth.

Clinical Examination Findings

Physical exam reveals a firm, fixed, non-tender or tender mass palpated along the course of the sciatic nerve. Neurological assessment shows [Grade 0-5] motor strength in the affected limb, diminished deep tendon reflexes (Achilles), and sensory loss in the sciatic nerve distribution. Presence of café-au-lait spots or subcutaneous neurofibromas noted (if NF1 positive). Gait analysis demonstrates antalgic limp.

Treatment Protocol

Multidisciplinary management plan initiated. Surgical resection with wide margins is the primary treatment modality. Adjuvant/Neoadjuvant radiotherapy and/or systemic chemotherapy (e.g., ifosfamide/doxorubicin-based regimens) to be discussed by the Tumor Board. Pain management via neuropathic agents (gabapentinoids). Regular surveillance imaging (MRI/PET-CT) for local recurrence and distant metastasis.

Detailed clinical guide coming soon.