Definition

1. Noun:
   • A medical condition: Thoracic outlet syndrome is a disorder characterized by compression of nerves or blood vessels in the thoracic outlet—the space between the collarbone and the first rib. This compression leads to symptoms in the neck, shoulder, arm, and hand.

Usage

• Thoracic outlet syndrome is typically discussed in medical contexts. It is used to describe a specific clinical diagnosis involving nerve or vascular compression.
• It is often abbreviated as TOS in clinical notes and discussions.

Examples

• Noun:
  • The patient was diagnosed with thoracic outlet syndrome after reporting persistent arm pain and numbness.
  • Physical therapy is a common first-line treatment for neurogenic thoracic outlet syndrome.
  • Symptoms of thoracic outlet syndrome can be exacerbated by certain postures or repetitive overhead activities.

Advanced Usage

• Types of Thoracic Outlet Syndrome: The term encompasses different types based on the compressed structure:
  • Neurogenic TOS: The most common form, involving compression of the brachial plexus nerves.
  • Vascular TOS: Less common, involving compression of the subclavian artery or vein.
• Provocative Tests: In a medical examination, a doctor might perform specific maneuvers (e.g., Adson's test) to reproduce the symptoms of thoracic outlet syndrome.

Variants and Related Words

• TOS: A common acronym for thoracic outlet syndrome.
• Brachial plexus compression: A more specific term often related to neurogenic TOS.
• Cervical rib syndrome: A related condition where an extra rib contributes to the compression, often considered a subtype or cause of TOS.

Synonyms

• Brachial plexus neuropathy (specifically for the neurogenic form).
• Scalenus anticus syndrome (an older, more specific term for one potential cause).

Related Phrases

• "Diagnosis of exclusion": Thoracic outlet syndrome is sometimes described this way, as other conditions with similar symptoms (like carpal tunnel syndrome) must be ruled out first.
• "Thoracic outlet decompression surgery": A surgical procedure to relieve the compression causing thoracic outlet syndrome.

Noun

1. tingling sensations in the fingers; caused by compression on a nerve supplying the arm