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Thrombosed external haemorrhoid (pile) on anus

Thrombosed external haemorrhoid (pile) on anus

M170/0223

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Credit

DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY

Caption

Thrombosed haemorrhoid. Close-up of a thrombosed (clotted) external haemorrhoid on the anus of a 46-year-old man. Haemorrhoids (piles) are swollen veins in the lining of the anus. External haemorrhoids lie close to the anal opening, internal haemorrhoids lie higher up the anal canal. Haemorrhoids are caused by pressure on the veins of the anus. They are common in pregnancy and also arise from excessive straining to defecate. Symptoms include pain and bleeding on defecation. Mild haemorrhoids are controlled by drinking fluids and increasing dietary fibre. Rectal suppositories and creams reduce swelling and pain. More persistent cases require removal.

Release details

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