title: [Spontaneous regression of thymoma; report of a case].
abstract: A 44-year-old woman was admitted to our hospital with chest pain. Chest roentgenograms and computed tomography (CT) scan revealed an anterior mediastinal tumor and bilateral pleural effusion. However, CT scan 3 days after magnetic resonance imaging (MRI) revealed regression of the tumor. Extended thymo-thymectomy was performed via median sternotomy. The tumor was in the right lobe of the thymus. Pathologically the tumor was diagnosed as a mixed type non-invasive thymoma, but some parts of the tumor cells were necrotic. This is the 10th case of spontaneous regression of thymoma reported in the Japanese literature.
authors.affiliation: Department of Surgery, Sendai Kousei Hospital, Sendai, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Ishibashi
authors.forename: Y
authors.initials: Y
authors.lastname: Ashino
authors.forename: H
authors.initials: H
authors.lastname: Niikawa
authors.forename: T
authors.initials: T
authors.lastname: Hosaka
authors.forename: T
authors.initials: T
authors.lastname: Hasumi
authors.forename: J
authors.initials: J
authors.lastname: Shibuya
authors.forename: S
authors.initials: S
authors.lastname: Suzuki
authors.forename: M
authors.initials: M
authors.lastname: Handa
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D009365:Neoplasm Regression, Spontaneous; D013945:Thymoma / Q000175:diagnosis* / Q000473:pathology; D013953:Thymus Neoplasms / Q000175:diagnosis* / Q000473:pathology