hemorrhoid /hem·or·rhoid/ (hem´ah-roid) prolapse of an anal cushion, resulting in bleeding and painful swelling in the anal canal. 
prolapsed hemorrhoid
)
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.
prolapsed hemorrhoid
Etymology: L, prolapsus, falling; Gk, haim orrhois, a vein that loses blood
an internal hemorrhoid that protrudes through the anal orifice.
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
| ?Page tools | ||
|---|---|---|
|