[Magnetic resonance in the study of residual mediastinal masses after therapy of lymphoma].
Forty-five patients with mediastinal spread of malignant, Hodgkin's and non-Hodgkin's lymphomas were examined with MR Imaging at 0.5 T. Ninety-two examinations were performed at diagnosis and/or during and after treatment to investigate MR capabilities in distinguishing fibrous tissue from active disease in the masses residuing after therapy--which cannot be done by means of CT. MR results indicated T2-weighted sequences to be the most useful. MR results were compared with the data collected from follow-up, clinics, and biology. MR Imaging had high accuracy (92.1%). The number of false negatives was very low, thanks to the low intensity of fibrous tissue, while a relatively high number of false positives was observed, probably due to the difficulties in discriminating inflammatory from neoplastic tissue.
Davini
O
O
Radiologia Centrale, Ospedale Molinette, USL VIII, Torino.
Levis
A
A
Garabello
D
D
Foggetti
M D
MD
Depaoli
L
L
Cirillo
R
R
De Lucchi
R
R
Orsucci
L
L
Resegotti
L
L
D005500:Follow-Up Studies; D006689:Hodgkin Disease / Q000175:diagnosis / Q000532:radiotherapy*; D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis / Q000532:radiotherapy*; D008279:Magnetic Resonance Imaging; D008479:Mediastinal Neoplasms / Q000175:diagnosis / Q000532:radiotherapy*; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis*; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity
La risonanza magnetica nello studio delle masse mediastiniche residue dopo terapia nei linfomi.