Challenges in Double-Lumen Tube Placement Due to Idiopathic Laryngotracheal Stenosis in a Right Lung Adenocarcinoma Patient: A Case Report.

We report a case of idiopathic laryngotracheal stenosis (ILTS) in a 72-year-old woman scheduled for a right upper lobectomy. Although she had no history of tracheal intubation or respiratory disease, her bronchus was stenosed for approximately 2 cm starting 5 cm below the vocal cords, with the narrowest lumen measuring 10 mm, which impeded placement of a 32 Fr double-lumen tube (DLT). Consequently, a 7.5 mm endotracheal tube with a bronchial blocker was used for lung isolation. Even without a history of tracheal stenosis, it is crucial to evaluate potential stenosis using CT or endoscopy. If symptoms occur, endoscopic or surgical treatment should be considered.