Microfibrillar Collagen Hemostat: A New Transcatheter Embolization Agent

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Abstract
Nine patients underwent transcatheter embolization with a suspension of microfibrillar collagen hemostat (MCH). Of the patients, 4 had large vascular renal tumors; 2 had bleeding bladder carcinomas. There was 1 case each of bleeding rectal tumor, bleeding esophageal varices and arteriovenous malformation of the shoulder. MCH was highly thrombogenic and could be injected through very small catheters. It was highly effective as an occlusive agent and was able to penetrate the small end-arteries of a lesion. Its main disadvantage is that if normal tissues are inadvertently embolized, there is a risk of ischemic complication.

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