title: Squamous cell carcinoma presenting as a refilled thin-walled cavity in lung: a case report.
abstract: Thin-walled cavity with air-fluid level is often considered radiographically benign-looking lesion. We recently encountered a patient with a rare lung cavity. A 58-year-old male presented with intermittent fever, chest pain and hemoptysis. A large thin-walled cavity, with a smooth inner surface and a clear air-fluid level, occupied the left upper lobe on the chest computerized tomography (CT) scan. After intravenous antibiotics was administrated, the air-fluid level in the cavity disappeared, and the cavity was gradually fluid refilled unexpectedly. However, the cavitary lesion kept the previous contour. Then CT-guided percutaneous needle lung biopsy was performed, revealing a squamous cell carcinoma of the lung. Although it is rare, a refilled thin-walled cavity in lung may be malignant, which should be kept in mind by clinician.
authors.affiliation: Department of Respiratory Medicine, Peking University Third Hospital, Beijing, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Lu
authors.affiliation: Department of Respiratory Medicine, Peking University Third Hospital, Beijing, China.|Department of Pathology, Peking University Health Science Center, Beijing, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Department of Radiology, Peking University Third Hospital, Beijing, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Liu
authors.affiliation: Department of Oncology, Peking University Third Hospital, Beijing, China.
authors.forename: Baoshan
authors.initials: B
authors.lastname: Cao
authors.affiliation: Department of Respiratory Medicine, Peking University Third Hospital, Beijing, China.
authors.forename: Wanzhen
authors.initials: W
authors.lastname: Yao
authors.affiliation: Department of Respiratory Medicine, Peking University Third Hospital, Beijing, China.
authors.forename: Yahong
authors.initials: Y
authors.lastname: Chen
keywords: air-fluid level; cavity; lung cancer; thin-walled