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hemodialysis-associated telangiectasia

Monday 12 March 2012

Hemodialysis-Associated Telangiectasias

Telangiectasia generally refers to the dilation of pre-existing vessels, whereas angiomatosis refers to new vessel growth.

Gastric telangiectasias develop in some patients on long-term hemodialysis.

The telangiectatic areas appear small, flattened, and reddish with fern-like margins.

Several factors may predispose to its development.

Chronic sodium and water overload may result in venous hypertension, causing submucosal venous dilation.

Additionally, dialysis patients receive aluminum hydroxide on a long-term basis to control hyperphosphatemia.

Aluminum compounds are known to cause skin telangiectasias.

Patients on hemodialysis also develop accelerated atherosclerosis, which may predispose the gastrointestinal vasculature to develop abnormalities.

See also

- gastric vascular lesions