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Review
. 1998 Dec 15;83(12 Suppl American):2798-802.
doi: 10.1002/(sici)1097-0142(19981215)83:12b+<2798::aid-cncr28>3.3.co;2-5.

The pathophysiology of lymphedema

P S Mortimer  1
Affiliations
Review

The pathophysiology of lymphedema

P S Mortimer. Cancer. .

Abstract

Background: All edemas result from an imbalance between capillary filtration and tissue (lymph) drainage. This basic approach was adopted to investigate mechanisms for chronic arm edema following breast carcinoma treatment.

Methods: A review of causes of lymphedema is presented plus the traditional pathophysiology of breast carcinoma related lymphedema (postmastectomy edema; PME). A summary of recent research that explored capillary filtration as a surrogate for lymph flow in the steady state is presented.

Results: A reduced interstitial protein concentration (relative to plasma) argues against lymphatic obstruction. Evidence exists that total arm blood flow (in some patients) and vascular bed size are increased in PME.

Conclusions: The primary insult to the axillary lymphatic system by surgery and radiotherapy presumably is the root cause of PME; however, there is strong evidence to suggest that hemodynamic factors are contributory to the chronic swelling.

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