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internal hemorrhoid

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.02 sec.
hemorrhoid /hem·or·rhoid/ (hem´ah-roid) prolapse of an anal cushion, resulting in bleeding and painful swelling in the anal canal.
Hemorrhoids: (A), internal; (B), external; (C), mixed; (D), thrombosed.

external hemorrhoid  one in a vein of the inferior rectal plexus, below the pectinate line and covered with modified anal skin.
internal hemorrhoid  one in a vein of the superior rectal plexus, originating above the pectinate line and covered by mucous membrane.
prolapsed hemorrhoid  an internal hemorrhoid that has descended below the pectinate line and protruded outside the anal sphincter.
strangulated hemorrhoid  a prolapsed hemorrhoid whose blood supply has become occluded by constriction of the anal sphincter.
thrombosed hemorrhoid  one containing clotted blood.

internal hemorrhoid,
a fold of mucous membrane at the anorectal junction, caused by edema or dilation of the interior rectal vein.


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Colonoscopy was positive only for internal hemorrhoids and diverticulosis coli.
The only sign you may notice from internal hemorrhoids is bright red blood on the toilet paper or in the toilet bowl.
When he reached my internal hemorrhoids, he took another picture for me.
 
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