A case of solitary bronchial squamous papilloma

A case of solitary bronchial squamous papilloma Aikawa, Masayasu, Nakanishi, KozoDepartment of Thoracic Surgery, Aso Iizuka Hospital A 50-year-old woman was consulted our hospital because of abnormal shadow on chest X ray. Chest CT demonstrated a 1cm mass lesion with a smooth margin in the left upper division of the lung. On 6-month follow up, the lesion did not change in size or shape. We preformed segmental resection of the left upper division. The tumor was elastic hard, 8×8×5mm, not invasive, and diagnosed as papilloma by intraoperative pathologic examination. On showing postoperative pathologic examination, the tumor was diagnosed as squamous papilloma, showing squamous cells without atypical cells covered by fibrous stroma in a dilated bronchiolus. There was no relapse during the 2 years follow-up after surgery. Solitary bronchial squamous papilloma is rare, about 50 cases reported in the literature. We must consider treatment with or without surgery because it is difficult to diagnose the lesion as benign or malignant on preoperative examination, Furthermore, it is necessary to follow patients strictly, especially high risk patients such as smokers.