# Clinical Manifestations and Diagnostic Considerations of C7-T1 Single-Level Myelopathy: A Case Series

## TL;DR

This paper presents three rare cases of C7-T1 cervical myelopathy, highlighting unusual symptoms and diagnostic challenges.

## Contribution

The study identifies atypical clinical features of C7-T1 myelopathy, aiding in its diagnosis.

## Key findings

- C7-T1 myelopathy can present with gait disturbance without upper extremity deficits.
- Spinal cord compression at C7-T1 may not align with the location of sensory deficits.
- Three cases showed varied compression levels and sensory deficit locations.

## Abstract

Cervical myelopathy is caused by compression of the cervical spinal cord for any reason. Cervical myelopathy most commonly affects the C5-6 level. However, C7-T1 single-level myelopathy is rare, and neurological findings may be atypical, making diagnosis difficult. We report three cases and discuss their clinical manifestations. Unlike other levels of cervical myelopathy, C7-T1 single-level myelopathy may present with gait disturbance without neurological deficits in the upper extremities. In addition, all three of our cases had different levels of spinal cord compression and locations of sensory deficits; at the C7-T1 level, the spinal cord compression may not correspond to the site of the sensory deficit. These features may help clinicians in the diagnosing of myelopathy.