Hemorrhoids Update Review

Archive for the ‘Signs & Symptoms’ Category

In the upper anal canal, the hemorrhoids cushions are composed of three submucosal pillars of sinusoids within connective tissue, generally in the left lateral, right anterior, and right posterior. During the act of defecation, the hemorrhoids cushions become engorged with blood, cushioning the anal canal and supporting the anal canal lining. The pathologic term hemorrhoids is used to describe the downward displacement of the cushion along with dilation of the contained sinusoids and sometimes bleeding from the arteriole, venule, or sinusoidal portion.Hence, hemorrhoids develop when the supporting tissues of the anal cushion deteriorate or with extensive downward pressure, as in prolonged straining at stool or pregnancy.

The most common complaints of burning, itching, swelling, and pain usually are not from hemorrhoids but result from pruritus ani, anal abrasion, anal fissure, thrombosed external hemorrhoids, or prolapsed anal papilla. Symptoms are aggravated by constipation and diarrhea. The most common manifestation of hemorrhoids is painless, bright red rectal bleeding associated with bowel movement. With severe hemorrhoids,the patient commonly describes the bleeding episode as blood dripping into the toilet bowl. A feeling of incomplete evacuation is also common. In chronic prolapse, exposed rectal mucosa often causes perianal irritation and mucus staining on the underwear. Congestion of external hemorrhoids or skin tags can cause discomfort. Except in the presence of thrombosis, pain is rarely an early symptom of hemorrhoidal disease and other diagnoses should be excluded.

Bleeding and protrusion are among the most common symptoms of hemorrhoids. However, Mazier reported on a series of 500 patients with complaints of “hemorrhoids” and found that only one third had any significant hemorrhoids (personal communication). hemorrhoids bleeding typically results in bright red blood that drops into the toilet or is noted on the toilet. It is generally painless. More vigorous bleeding can occur as the hemorrhoids enlarge. Usually, prompt reduction of the protruding mass will cause this bleeding to abate. Acute thromboses of internal or external hemorrhoids are usually associated with severe pain that occurs with a palpable perianal mass. These patients are generally very uncomfortable, and the diagnosis is immediately obvious on clinical examination.

Examination of the patient with hematochezia, although dictated largely by the age of the patient, should include sufficient investigations to rule out a proximal source of bleeding, such as inflammatory bowel disease or neoplasia. Moreover, hemorrhoids bleeding is rarely a cause of iron-deficiency anemia.