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.
Some cases of red eye are caused by pink eye. Pinkeye, or conjunctivitis, is an inflammation or infection of the clear, protective layer that coats the front part of the eye. Pink eye can be caused by allergies, bacteria, viruses, or toxic substances. Pinkeye is very common but is usually not serious.