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Stasis ulcer
Other Resources UpToDate PubMed

Stasis ulcer

Contributors: Jeffrey M. Cohen MD, Susan Burgin MD
Other Resources UpToDate PubMed

Synopsis

Stasis ulcers, or venous ulcers, are ulcers due to venous insufficiency. They are large, irregularly shaped, shallow ulcers that often demonstrate a yellow exudate covering the wound bed. They are most commonly found in the medial malleolar region of the lower extremity. While the reported prevalence varies, it is estimated that approximately 0.05%-1.52% of Americans suffer from venous ulcers. An increased prevalence is seen with age, and both sexes are affected equally. Additional risk factors include a history of thrombosis, phlebitis, leg injury such as fracture or trauma, pregnancy, obesity, lower socioeconomic status, and social isolation.

The primary pathophysiology involves incompetent one-way venous valves or dysfunctional calf muscle pumping, leading to insufficient venous blood return to the heart and chronic leg venous hypertension. This venous hypertension leads to aberrant tissue perfusion and subsequent decreased delivery of oxygen and nutrients, failure to remove metabolic byproducts, and tissue ischemia.

Additional clinical features commonly associated include leg and ankle edema, varicose veins, yellow-brown pigmentation secondary to hemosiderin deposition and extravasated red blood cells, eczematous changes with scaling and crusting (stasis dermatitis), and lymphedema. Lipodermatosclerosis is also seen and corresponds to fibrotic changes in subcutaneous tissue leading to a hard and indurated feel to the skin. An "inverted champagne bottle" leg indicates end stage lipodermatosclerosis and is caused by severe fibrotic changes in the distal leg and leg edema of the proximal leg. Atrophie blanche are smooth, ivory-colored atrophic plaques secondary to sclerosis seen in approximately 40% of patients with venous insufficiency.

Additional key points are that stasis ulcers usually begin on the medial malleolus but may become circumferential over time. They may be painful, are difficult to treat, and frequently recur. They may become secondarily infected.

Codes

ICD10CM:
I83.009 – Varicose veins of unspecified lower extremity with ulcer of unspecified site

SNOMEDCT:
41915009 – Stasis ulcer

Look For

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

  • Ischemic ulcer – Weak or absent distal pulses, does not have surrounding areas of dermatitis, has a punched-out appearance; located anteriorly or laterally on the lower extremity consistent with pressure sites.
  • Neurogenic ulcer – Almost invariably has peripheral neuropathy with decreased sensation and HgbA1C that is elevated; look for punched-out ulcers that are in pressure sites.
  • Pyoderma gangrenosum – Look for very painful ulcers that have an irregular necrotic, undermined, overhanging border; these can occur anywhere.
  • Buerger disease – Weak or absent distal pulses. Patients almost invariably have a history of smoking. Upper limb involvement is also seen.
  • Cryofibrinogenemia – Look for associated Livedo reticularis and purpura.
  • Acroangiodermatitis – Although they do not often ulcerate, lesions are commonly seen in conjunction with venous hypertension and manifest as violaceous patches and plaques that appear on the extensor surfaces of the distal lower extremities.
  • Martorell hypertensive leg ulcer
  • Sickle cell disease ulcer
  • Trauma
  • Bullous impetigo
  • Cutaneous squamous cell carcinoma
  • Atypical mycobacterial infection
  • Panniculitis with ulceration

Best Tests

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Management Pearls

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Therapy

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References

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Last Reviewed:09/11/2018
Last Updated:02/12/2019
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Patient Information for Stasis ulcer
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Stasis ulcer
A medical illustration showing key findings of Stasis ulcer : Erythema, Irregular configuration, Leg, Skin erosion, Skin ulcer, Peripheral leg edema
Clinical image of Stasis ulcer - imageId=210935. Click to open in gallery.  caption: 'Numerous ulcers of varying sizes with yellow slough at their bases and surrounding erythema on the leg.'
Numerous ulcers of varying sizes with yellow slough at their bases and surrounding erythema on the leg.
Copyright © 2024 VisualDx®. All rights reserved.