Hemorrhoid Anatomy

Thus they are categorized into internal and external hemorrhoids see. Internal above the dentate line external below the dentate line or mixed above and below the dentate line.

Figure Hemorrhoids Image Courtesy S Bhimji Md

The venous supply of the rectum.

Hemorrhoid anatomy. Hemorrhoids are swollen blood vessels in the lower rectum. Vaginal pain can occur with hemorrhoids but it could be another condition. With distention of the hemorrhoid vessels within the anal canal irritation from passage of stool and wiping can lead to excoriation and bleeding.

A hemorrhoidectomy is surgery to remove internal or external hemorrhoids that are extensive or severe. Factors leading to development of hemorrhoids include hard stools from a low fiber diet limited fluid intake straining to pass bowel movements and prolonged sitting during bowel movements. Internal hemorrhoids are traditionally graded from i to iv based on the extent of prolapse.

They are among the most common causes of anal pathology and subsequently are blamed for virtually any anorectal complaint by patients and medical professionals alike. Hemorrhoids are classified by their anatomic origin within the anal canal and by their position relative to the dentate line. Typically hemorrhoids are classified as either internal hemorrhoids inside the rectum or external hemorrhoids beneath the skin surrounding the anus.

Hemorrhoid cushions are a part of normal human anatomy and become a pathological disease only when they experience abnormal changes. Hemorrhoids are central to the anorectal area and do cause pain. There are three main cushions present in the normal anal canal.

Hemorrhoids are divided into three categories. These lumps are the origin of much of the pain experienced by hemorrhoids. These are located classically at left lateral right anterior and right posterior positions.

Hemorrhoid anatomy hemorrhoids are swollen veins that enlarge and develop in the lower rectum and anus. Surgical hemorrhoidectomy is the most effective treatment for hemorrhoids though it is associated with the greatest rate of complications. Well developed internal hemorrhoids are then situated usually in the right anterior right posterior and left lateral areas.

Physiological hemorrhoids are arteriovenous cushions within the rectal corpus cavernosum which may become pathological hemorrhoids following abnormal enlargement and possible protrusion. External hemorrhoids are lumps that form around the anus but not anywhere close to the genitals. Other factors such as degree of discomfort bleeding comorbidities and patient preference should help.

Hemorrhoids Internal External Pictures Symptoms