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.
The leading cause of a red, inflamed eye is viral infection. Adenoviruses are the type of virus that is most commonly responsible for the infection. Other viruses that can cause pinkeye include herpes simplex virus (HSV), varicella-zoster virus (VZV), poxvirus (molluscum contagiosum, vaccinia), picornavirus (enterovirus 70, Coxsackie A24), and human immunodeficiency virus (HIV).