How a polyp biopsy is taken depends on the location: 1  Colonoscopy or flexible sigmoidoscopy explores the large bowel. 2  Colposcopy-directed biopsy examines the vagina and cervix. 3  Esophagogastroduodenoscopy (EGD) or other endoscopy is used for the throat, stomach, and small bowel.  Laryngoscopy is used for the nose and throat.
11 doctors agreed: Several: Possible causes of pink eye (conjunctivitis) include bacterial or viral infection, allergic reaction, rosacea, dry eye, and autoimmune disease.
Pink Eye (Conjunctivitis) Topic Guide. Pink Eye (Conjunctivitis): Pink eye (conjunctivitis) refers to a condition that makes the whites of the eyes look pink or red. Causes include colds, allergies, bacteria, fungus, parasites, and eye medications or cosmetics. Less commonly, autoimmune conditions and other rare conditions may be the cause. Pink eye tends to resolve within 5 to 10 days.