title: Usefulness of diffusion-weighted magnetic resonance imaging-guided biopsy: pyothorax-associated lymphoma.
abstract: The relatively rare entity pyothorax-associated lymphoma (PAL) is an aggressive disease with a poor prognosis. Therefore, PAL should be diagnosed as soon as possible with minimal invasion. We herein report the case of an 81-year-old man with PAL that was successfully treated with chemotherapy. A computed tomography-guided tumor biopsy could not provide adequate specimens for pathological investigation, whereas a diffusion-weighted magnetic resonance imaging-guided tumor biopsy led to a diagnosis. Our findings suggest that diffusion-weighted image guidance for planning the biopsy of an intrathoracic mass, especially in cases of suspected PAL, is a highly accurate method because it provides information about cellularity and does not create calcification-related artifacts.
authors.affiliation: Department of Respiratory Medicine, Shonan Fujisawa Tokushukai Hospital, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Hibino
authors.forename: Takeo
authors.initials: T
authors.lastname: Irie
authors.forename: Motoki
authors.initials: M
authors.lastname: Ohe
authors.forename: Naoya
authors.initials: N
authors.lastname: Nakamura
authors.forename: Tetsuri
authors.initials: T
authors.lastname: Kondo
mesh_terms: D000369:Aged, 80 and over; D038524:Diffusion Magnetic Resonance Imaging; D006801:Humans; D061705:Image-Guided Biopsy / Q000379:methods; D008223:Lymphoma / Q000175:diagnosis* / Q000000981:diagnostic imaging*; D008297:Male; D010997:Pleural Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography