Role of the 30  Telescope in Evaluation of Laryngeal Masses During Direct Laryngoscopy Arif Sanli, Ozlem Celebi, Mehmet Eken, Alev Oktay, Sedat Aydin, and Emin Ayduran Istanbul, Turkey Summary: Visualization of enlarged laryngeal lesions is the most important factor in choosing a surgical technique, especially for partial surgery. For this reason standard microlaryngoscopy, a computed tomography (CT) scan of the larynx, and 30  telescopic microlaryngoscopy were compared during evalua- tion of the laryngeal ventricul and sub-glottic area. The histopatholgoical findings of the specimens collected under each modality were simultaneously compared. Comparison of the histopathological findings, which corresponded to inspection with the 30  telescopic method, was more significant than with the use of standard microlaryngoscopy or the CT scan. The aim of the current study therefore was to determine the importance of the 30  telescopic micro- laryngoscopic method for the evaluation of the laryngeal ventricle and sub- glottic area. Key Words: Direct laryngoscopy—Larynx—Telescope—CT scan. INTRODUCTION Many methods have been used successfully for the diagnosis and treatment of laryngeal diseases. 1 One of them, rigid telescopy, is widely used in oto- rhinolaryngology for endolaryngeal evaluation. Laryngeal telescopes are made with several view- ing angles, including 0, 30, 70, 90, and 120  . 2 Rigid telescopy has some advantages over the alternative, traditional techniques of indirect mirror laryngoscopy and direct laryngoscopy. The telescopic image is larger, brighter, and clearer, allowing earlier diagnosis and aiding preoperative and postoperative evaluation as well as physician- patient communication. 2,3 The telescope has been applied to endoscopic surgery of the larynx. The telescope performed bet- ter than either the fiberscope or the traditional laryngeal mirror in laryngeal photography. 1,4,5 Endolaryngeal visualization provided by the tele- scope was excellent in laryngeal surgery. 6 Further- more, the telescope has been recommended for use in endoscopy of neonates. 7 Laryngeal telescopes are made with various viewing angles, including 0, 30, 70, 90, and 120  . The different angles allow different physical ap- proaches to the vocal tract. Each telescope angle al- lows preferential visualization of specific regions during the laryngeal examination. Along with technological advances, office exam- inations have evolved with the use of rigid telescopy, fibroscopy and stroboscopy with video regardings; Accepted for publication February 1, 2007. From the Kartal Education and Research Hospital, 2nd De- partment of ENT, Istanbul, Turkey. Address correspondence and reprint requests to Mehmet Eken, Kartal Education and Research Hospital, 2nd Department of ENT, Cevizli, Istanbul, Turkey. E-mail: memedeken@ yahoo.com Journal of Voice, Vol. 22, No. 2, pp. 238–244 0892-1997/$34.00 Ó 2008 The Voice Foundation doi:10.1016/j.jvoice.2007.02.001 238