hemorrhoids

aid anal anatomy anus arterio bleeding body bowel canal channels colon constipation cross diagnosis diagram digestion digestive disease external fissure fistula genitourinary gland gut health healthcare hemorrhoid hemorrhoidal hemorrhoidectomy hemorrhoids human illustration inflammation internal intestine issues male medical medicine men pain part people piles problem rectal rectum renal science sclerotherapy section sinuses sphincter sphincters swollen symptoms system treatment vascular venous visual