Neuromuscular complications in cancer

Area of Science:

• Neurology
• Oncology
• Neuro-oncology

Background:

• Cancer is increasingly treatable, yet neuromuscular complications arise from cancer itself or its treatments.
• These complications stem from diverse causes including tumor invasion, metastasis, and treatment toxicities.
• Understanding these mechanisms is crucial for effective patient management.

Purpose of the Study:

• To systematically review neuromuscular complications in cancer patients.
• To correlate these complications with the anatomical distribution within the peripheral nervous system.
• To categorize etiologies including neoplastic, treatment-related, and paraneoplastic conditions.

Main Methods:

• Review based on the anatomical divisions of the peripheral nervous system: cranial nerves, motor neurons, nerve roots, plexus, peripheral nerves, neuromuscular junction, and muscle.
• Discussion of various etiologies: neoplastic, surgical, toxic, metabolic, endocrine, and paraneoplastic/immune.
• Correlation of etiologies with specific anatomical sites.

Main Results:

• Neuromuscular system can be affected by direct tumor invasion, metastasis, neuroendocrine, metabolic, dysimmune/inflammatory, infections, and toxic conditions.
• Cancer treatments, often DNA-damaging, frequently cause toxic side effects impacting the neuromuscular system.
• Etiologies are discussed separately for each anatomical part of the peripheral nervous system.

Conclusions:

• Accurate identification of the causative mechanism for neuromuscular complications is essential for appropriate treatment.
• This anatomical and etiological framework aids in diagnosing and managing diverse neuromuscular issues in cancer patients.
• Further research into specific mechanisms can optimize supportive care and treatment strategies.