title: Sclerosing Pneumocytoma with a Wax-and-Wane Pattern of Growth: A Case Report on Computed Tomography and Magnetic Resonance Imaging Findings and a Literature Review.
abstract: Sclerosing pneumocytoma (SP) of the lung is a rare benign neoplasm. Here, we describe an unusual presentation of SP with a wax-and-wane pattern of growth in a 47-year-old woman. Tumor diameter decreased over a 3-year follow-up period and then increased on serial follow-up computed tomography scans. The mass showed high signal intensity on both T1- and T2-weighted chest magnetic resonance imaging (MRI) and early enhancement with a plateau on dynamic MRI. We speculate that intratumoral bleeding and resorption processes accounted for the changes in tumor size.
authors.affiliation: Department of Radiology and the Research Institute of Radiological Science, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 135-720, Korea.
authors.forename: Yong Pyo
authors.initials: YP
authors.lastname: Kim
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 135-720, Korea.
authors.forename: Sungsoo
authors.initials: S
authors.lastname: Lee
authors.affiliation: Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 135-720, Korea.
authors.forename: Heae Surng
authors.initials: HS
authors.lastname: Park
authors.affiliation: Department of Radiology and the Research Institute of Radiological Science, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 135-720, Korea.
authors.forename: Chul Hwan
authors.initials: CH
authors.lastname: Park
authors.affiliation: Department of Radiology and the Research Institute of Radiological Science, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 135-720, Korea.
authors.forename: Tae Hoon
authors.initials: TH
authors.lastname: Kim
mesh_terms: D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D047868:Pulmonary Sclerosing Hemangioma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed / Q000379:methods*
keywords: Magnetic resonance imaging; Multidetector computed tomography; Pulmonary sclerosing hemangioma