title: Prolonged Air Leakage Caused by Mesenchymal Cystic Hamartoma of the Lung.
abstract: A 16-year-old girl was transferred to the department of thoracic and cardiovascular surgery because of a spontaneous pneumothorax with prolonged air leakage. Chest computed tomography demonstrated a cystic lesion measuring 2×3 cm and involving the left upper lobe. Left upper lobectomy was performed via video-assisted thoracoscopic surgery. A pathologic examination of the specimen revealed a mesenchymal cystic hamartoma. Despite the rarity of pulmonary mesenchymal cystic hamartoma, it should be considered a potential cause of pneumothorax for patients with a large pulmonary cyst. Further, surgical resection must be considered because serious complications such as hemothorax, hemoptysis, and malignant transformation have been reported.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Yeungnam University College of Medicine.
authors.forename: Young Uk
authors.initials: YU
authors.lastname: Lee
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Yeungnam University College of Medicine.
authors.forename: Jang Hoon
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Yeungnam University College of Medicine.
authors.forename: Jong Hyun
authors.initials: JH
authors.lastname: Baek
keywords: Hamartoma; Lobectomy (lung); Pneumothorax