Two-Scope Technique for Tracheal Epithelial-Myoepithelial Carcinoma-A Rare Case Report and Review

Epithelial myoepithelial carcinoma (EMC) is an exceptionally uncommon salivary gland type tumour of the lung accounting for only 0.1% to 1% of all primary pulmonary malignancies. We describe a 40-year-old man presenting with hemoptysis, in whom computed tomography (CT) of the chest revealed an endoluminal mass in the upper trachea. The initial biopsy suggested adenoid cystic carcinoma. Following complete removal using two-scope flexible bronchoscopic technique combining tumour snaring with cryoprobe-assisted retrieval, the final diagnosis of primary tracheal EMC was confirmed on histopathology and immunohistochemistry. This case not only contributes to the limited reports of tracheal EMC but also illustrates that the two-scope method may be a practical alternative to rigid bronchoscopy, especially in resource-limited or complex airway situations.