Nerve sheath tumors of the sciatic nerve and sacral plexus

Area of Science:

• Neurology
• Oncology
• Radiology

Background:

• Nerve sheath tumors in the sciatic nerve and sacral plexus present a diverse range of pathologies and clinical manifestations.
• Accurate diagnosis and staging are critical for effective management of these complex tumors.

Purpose of the Study:

• To illustrate the spectrum of pathology and presentation of sciatic nerve and sacral plexus nerve sheath tumors.
• To evaluate the role of computed tomography (CT) in diagnosing and assessing the resectability of these tumors.
• To categorize patient presentations into distinct groups based on tumor location and characteristics.

Main Methods:

• Retrospective review of eight patients with sciatic nerve and sacral plexus nerve sheath tumors.
• Detailed analysis of clinical presentations, including pain and neurological deficits.
• Comprehensive evaluation of diagnostic imaging, primarily focusing on CT findings.
• Classification of patients into four groups based on tumor location, CT characteristics, and symptoms.

Main Results:

• Patients were categorized into four groups based on tumor location (subgluteal, thigh, intrapelvic) and CT findings (well-defined vs. poorly defined mass, neuroforaminal enlargement).
• Computed tomography (CT) was identified as the diagnostic procedure of choice, effectively delineating tumor extent and aiding in resectability assessment.
• Tumor presentations varied significantly, ranging from well-defined masses to intrapelvic tumors with extension and associated radicular pain or mass effect.

Conclusions:

• Sciatic nerve and sacral plexus nerve sheath tumors exhibit a wide spectrum of pathology and presentation.
• CT scanning is essential for accurate diagnosis, localization, and determining the surgical approach for these tumors.
• A conservative, nonoperative management strategy should be considered for asymptomatic or neurologically stable patients.