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Perianal hematoma

MONDO:0004871

Also known as: Thrombosed external haemorrhoids, external thrombosed hemorrhoids

3 clinical trials for this condition and its sub-types.

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Broader categories

Cardiovascular disorder (1051) Disease (680) Vascular disorder (135) Hemorrhoid (65) Varicose disease (39) Vein disorder (15) Human disease (14) Pelvic varices (1) Disease by body system or component (0)

Trials to join now! 1 Completed 2

Iron-Based MRI dye could replace risky gadolinium for vein scans

Diagnosis Recruiting now

This study tests a new MRI contrast agent called ferumoxytol, made from iron nanoparticles, to see if it can safely and effectively image veins in people with vein diseases. Current dyes can be risky for patients with kidney problems, but ferumoxytol may be safer and last longer …

Phase: PHASE2 • Sponsor: Min Zhou • Aim: Diagnosis

Last updated Jun 27, 2026 11:00 UTC