Fibroscopy is an endoscopic procedure used by the otolaryngologist to examine the functioning of the nose, pharynx and larynx. The specialist uses a fiber, a device usually attached to a camera, which can illuminate and visually explore the interior of said body cavities. The fiberoptic is introduced orally or nasally (nasal fibroscopia), with the patient awake. In this way, the practitioner can perform a more accurate and early disease in these areas of the body, such as sinusitis, sleep apnea, tumors, polyps, nodules, cysts or other problems dysphonia between diagnosis. Fibroscopy is a simple test that is performed without anesthesia or local anesthesia and takes about three minutes.