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 is often caused by an irritant in the eye(s) or infection from someone else. Age, sex, ethnicity, and race play no role in who becomes infected with pink eye. Failure to do the following increases your chances of getting pink eye: Who's At Risk. 1  Follow good hygiene, such as washing hands regularly.