Narrow band imaging in the diagnosis of intra-epithelial and invasive laryngeal squamous cell carcinoma: A preliminary report of two cases

We present two patients with laryngeal squamous cell carcinoma in whom the spread and the depth of invasion was evaluated with transnasal GIE equipped with NBI. Based on our results, the vascular neoplastic changes of carcinoma in situ of the larynx could be similar to carcinoma in situ of the esophagus.