気管気管支骨軟骨腫症（TPO）における後壁を温存した古典的な気管支鏡的結節：症例報告

Tracheobronchopathia osteochondroplastica (TPO) is a rare, benign disorder of the large airways, characterized by multiple submucosal osteocartilaginous nodules, typically sparing the posterior membranous wall. This report describes the case of an 84-year-old female with exertional dyspnea and a diagnosis of TPO confirmed through classic bronchoscopic findings, corroborated by CT imaging and normal pulmonary function tests (PFTs). The report assesses the current understanding of TPO pathophysiology, including recent insights into its molecular mechanisms, the spectrum of conditions that can mimic TPO, common diagnostic challenges and approaches utilizing imaging and bronchoscopy, and management strategies, including rare but potentially serious complications.