BENIGN LARYNGEAL TUMOURS
VOCAL CORD POLYPUS
Although this is probably the most common laryngeal mass its aetiology is not
understood. The polyp may arise from an area of unresolved infection or it
may be a response to traumatic abrasion or haematoma formation. It occurs
almost exclusively on a vocal cord and arises from the subepithelial connective
Fig. 80. Laryngocele. Radiograph showing a typical air-filled ca\ity.
Fig. 81. Laryngeal polypus. Microphotograph of polypus showing below left vocal cord.
tissue of Reinke's layer (Fig. 81). A single vocal cord polyp must be differenti-
ated from the polypoidal swelling of the vocal cords which is part of the
chronic laryngitis spectrum (p. 161). A single polyp is removed at direct
laryngoscopy and seldom recurs.