Thrombosed haemorrhoids. Close-up of the anus of a 55-year-old male patient with external haemorrhoids (centre) that have become thrombosed. Haemorrho

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Thrombosed haemorrhoids. Close-up of the anus of a 55-year-old male patient with external haemorrhoids (centre) that have become thrombosed. Haemorrhoids are swollen veins protruding from the anus that can bleed and cause pain. Here a blood clot (thrombus) has formed in the vein, causing significant pain and swelling in the area of the anus.

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Size: 5520px × 3680px
Photo credit: © DR P. MARAZZI/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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