An Unusual Case of Horner's Syndrome: A Rare Case of Cervical Chain Schwannoma

Schwannomas are benign, solitary nerve sheath tumours arising from the Schwann cells. They can arise from any of the cranial, spinal or autonomic nerve except for olfactory and optic nerve. The commonest site for head and neck schwannomas is the parapharyngeal space with vagus nerve being the most common the site of origin. On the other hand, schwannomas arising from cervical sympathetic chain is very rare entity. These tumours usually present as slow growing neck masses without any neurological deficit. Contrast enhanced imaging of neck helps in delineating the exact location and the nerve of origin.