title: Spontaneous radiographic resolution of malignant and benign cysts.
abstract: Two rare cases of cystic lesions with spontaneous radiographic resolution are presented. One is a 21-year-old man with a mediastinal seminoma containing a cystic lesion within the neoplasm that disappeared spontaneously on subsequent chest radiography and computed tomography. Another is a 65-year-old man with a pericardial cyst that also disappeared in subsequent chest radiography. The possible mechanisms for such rare occurrences are discussed.
mesh_terms: D000328:Adult; D000368:Aged; D004407:Dysgerminoma / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008476:Mediastinal Cyst / Q000000981:diagnostic imaging*; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging; D008482:Mediastinum / Q000000981:diagnostic imaging; D011859:Radiography; D012075:Remission, Spontaneous