**3.3 Anesthesia technique used in case of micro-laryngoscopy (MLS)**

In general, lesions present at the anterior 2/3 (membranous vocal folds) of the larynx can be easily exposed and treated with size 5.5 mm or smaller micro laryngeal ETT. Lesions at the posterior 1/3 (vocal processes and posterior commissure/ arytenoids region) of the larynx we can use one of those techniques (**Figure 5**):

A. **Oral intubation** using a small long ETT size: 5.0 mm or 5.5 mm microlaryngoscopy tube (MLT) with a length (30 cm length) with adult tube's balloon that makes good airway sealing. Or using Tritube (**Figure 3**), an ultrathin endotracheal tube (outer diameter 4.4 mm/inner diameter 2.4 mm).
