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Valves in the subsidiary lymph trunks in the neck
1South Tees Acute Hospitals NHS Trust, Middlesbrough, UK. Langfordnorton@hotmail.com
Summary
This study found no valves in jugular lymph trunks, unlike subclavian and bronchomediastinal trunks. The absence of these valves may contribute to chyle leaks after neck dissections.
Area of Science:
- Anatomy
- Surgical Anatomy
- Lymphatic System
Background:
- The thoracic duct, crucial for lymph and chyle transport, has valves at its venous termination.
- Valves in subsidiary lymphatic trunks within the neck remain under-investigated.
- Understanding neck lymphatic anatomy is vital for surgical procedures.
Purpose of the Study:
- To investigate the presence or absence of valves in the subsidiary lymphatic system of the neck.
- To elucidate the anatomical basis of potential complications in neck surgery.
Main Methods:
- Exploration of the left side of the neck in ten formalin-fixed cadavers.
- Preservation and stereomicroscopic examination of subsidiary lymphatic trunks.
Main Results:
- Identified eight subsidiary trunks: four jugular, two subclavian, and two bronchomediastinal.
- Found bicuspid ostial valves at the termination of subclavian trunks.
- Observed valves in bronchomediastinal trunks but none in jugular trunks.
Conclusions:
- The absence of valves in jugular lymph trunks is a novel finding.
- This absence may predispose to chyle leaks following neck dissections.
- Highlights potential anatomical variations impacting surgical outcomes.