To the Editor: Congenital laryngeal cysts are a rare entity and are potentially dangerous because of inspiratory stridor in newborns. They comprise about 5 % of benign laryngeal lesions [1, 2]. We present a technique utilizing Coblation technology, which results in bloodless dissection and no risk of airway fire. We use a 0° 4 mm nasal endoscope, Mckintosh and Coblator (Smith & Nephew, USA) for this procedure. A 4 mm nasal endoscope is inserted into the oral cavity visualizing the vallecular cyst (Fig. 1a). The surgeon introduces the Procise max Coblat ion (Fig. 1b) wand into the oral cavity. Coblation of the cyst is undertaken and excision is carried onto the base making sure to remove the lining completely (Fig. 1c and d). We did not use any postoperative steroids since there is no edema due to the low temperatures of this method. We have done two cases utilizing this technique. The first patient was an 8-wk-old child who had presented to the Pediatric emergency with noisy breathing since birth and difficulty in breathing since last 2 wk. Child also had difficulty in feeding since 2 wk. CT Scan of the child showed a cyst like structure in the valleculae, which was confirmed on laryngoscopy. The second child was 10-wk-old who presented with stridor and difficulty in feeding since 10 d. Direct laryngoscopic examination showed it to be a vallecular cyst, which was confirmed on imaging. None of the children have shown any recurrence 3 mo post operatively and are on regular follow up. The annual incidence of vallecular cysts shows a variation among many studies; from 5.3 cases per 100,000 live births to 1.87 and 3.49 cases per 1 0 0 , 0 0 0 l i v e b i r t h s [ 3 , 4 ] . A f i b e r o p t i c nasopharyngoscope is a great tool for diagnosis in children. Vallecular cysts develop either as an embryological malformation or as a consequence of ductal obstruction of mucus glands. Coblation means COntrolled aBLATION. It creates a controlled, plasma field to precisely remove tissue at a low temperature, resulting in minimal thermal damage to surrounding soft tissues and structures. Temperatures are between 40 °C and 70 °C with thermal penetration of less than 1100 μm. Endoscopic assisted coblation of congenital vallecular cyst is a safe procedure. It is quick, precise and bloodless. There is no edema or charring post operatively. * Ramandeep Singh Virk virkdoc@hotmail.com
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