Hemorrhoidectomy for thrombosed external hemorrhoids.

External hemorrhoids represent distended vascular tissue in the anal canal distal to the dentate line. Persons with thrombosed external hemorrhoids usually present with pain on standing, sitting or defecating. Acutely tender, thrombosed external hemorrhoids can be surgically removed if encountered within the first 72 hours after onset. Hemorrhoidectomy is performed through an elliptic incision over the site of thrombosis with removal of the entire diseased hemorrhoidal plexus in one piece. Caution must be exercised to avoid cutting into the muscle sphincter below the hemorrhoidal vessels. Infection after suture closure is rare secondary to the rich vascular network in the anal area. Stool softeners must be prescribed postoperatively to help prevent tearing at the suture line. Training and experience in general and skin surgery are necessary before the physician attempts this procedure unsupervised.