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.
1 Influenza (flu) A and B viruses are the most common causes in adults. 2  Respiratory syncytial virus, or RSV, is more common in infants and children than in adults. 3  Others include coronaviruses, rhinoviruses, parainfluenza viruses, and adenoviruses, which can also cause pinkeye.