The pathophysiology of lymphedema - 2012

Area of Science:

• Lymphatic system physiology and pathology
• Microsurgical interventions for lymphedema
• Tissue fluid dynamics and biochemistry

Background:

• Lymphedema frequently occurs post-trauma, inflammation, cancer surgery (lymph node removal), or chronic ulceration.
• Occlusion of lymphatic vessels impairs tissue fluid drainage, leading to pathological limb swelling.
• Understanding lymphatic system function is crucial for managing lymphedema and its complications.

Purpose of the Study:

• To review the current understanding of the lymphatic system in health and lymphedema.
• To detail the biochemical and hemodynamic changes in tissue fluid/lymph during lymphedema.
• To outline management strategies for lymphedema, including its common complication, dermato-lymphangioadenitis.

Main Methods:

• Review of existing literature on lymphatic system anatomy, physiology, and pathology.
• Analysis of tissue fluid/lymph biochemistry, pressure, and flow dynamics in lymphedema.
• Examination of histopathological changes and tissue fluid distribution.
• Discussion of surgical and non-surgical management approaches.

Main Results:

• The review defines the lymphatic system and elucidates its alterations in lymphedema.
• Key findings include changes in tissue fluid/lymph biochemistry, pressure, and flow.
• Histopathological features and tissue fluid localization in affected limbs are described.

Conclusions:

• Microsurgery offers potential for restoring lymphatic drainage by creating bypasses around obstructions.
• Comprehensive knowledge of lymphatic system mechanisms, fluid dynamics, and immune functions is essential for surgeons.
• Detailed understanding of upper limb lymphatic anatomy is vital to prevent iatrogenic damage and preserve limb function.