TY - JOUR
T1 - MR imaging in the follow-up of malignant and aggressive soft-tissue tumors
T2 - Results of 511 examinations
AU - Vanel, Daniel
AU - Shapeero, Lorraine G.
AU - De Baere, Thierry
AU - Gilles, René
AU - Tardivon, Anne
AU - Genin, Jean
AU - Guinebretière, Jean Marc
PY - 1994/1/1
Y1 - 1994/1/1
N2 - PURPOSE: To present magnetic resonance (MR) imaging findings from 511 follow-up examinations of aggressive soft-tissue tumors. MATERIALS AND METHODS: One hundred eighty-two patients with aggressive soft-tissue tumors underwent postoperative T1- and T2-weighted imaging; 41 also underwent 51 gadolinium-enhanced T1-weighted examinations, and five underwent dynamic gadolinium-enhanced subtraction imaging. RESULTS: Twenty-four of 25 patients (101 of 102 examinations) without high signal intensity (HSI) at T2-weighted imaging had no recurrence. Among 79 patients (321 examinations) who demonstrated HSI without a mass, only two tumors recurred within 1 year. An HSI mass was found in 88 studies of 78 patients and represented recurrence (n = 60), hygroma (n = 24), or a radiation-induced pseudomass (n = 4). Hygromas did not enhance, while recurrences enhanced at 1-3 minutes and postirradiation change enhanced at 4-7 minutes. CONCLUSION: T2-weighted imaging can be used to identify possible recurrence of aggressive soft-tissue tumors, while gadolinium-enhanced imaging can be used to differentiate recurrences from hygromas and inflammatory change.
AB - PURPOSE: To present magnetic resonance (MR) imaging findings from 511 follow-up examinations of aggressive soft-tissue tumors. MATERIALS AND METHODS: One hundred eighty-two patients with aggressive soft-tissue tumors underwent postoperative T1- and T2-weighted imaging; 41 also underwent 51 gadolinium-enhanced T1-weighted examinations, and five underwent dynamic gadolinium-enhanced subtraction imaging. RESULTS: Twenty-four of 25 patients (101 of 102 examinations) without high signal intensity (HSI) at T2-weighted imaging had no recurrence. Among 79 patients (321 examinations) who demonstrated HSI without a mass, only two tumors recurred within 1 year. An HSI mass was found in 88 studies of 78 patients and represented recurrence (n = 60), hygroma (n = 24), or a radiation-induced pseudomass (n = 4). Hygromas did not enhance, while recurrences enhanced at 1-3 minutes and postirradiation change enhanced at 4-7 minutes. CONCLUSION: T2-weighted imaging can be used to identify possible recurrence of aggressive soft-tissue tumors, while gadolinium-enhanced imaging can be used to differentiate recurrences from hygromas and inflammatory change.
KW - Fibromatosis, 40.1549
KW - Gadolinium
KW - Magnetic resonance (MR), contrast enhancement, 40.12143
KW - Soft tissues, neoplasms, 40.36, 40.37, 40.39
UR - http://www.scopus.com/inward/record.url?scp=0028147325&partnerID=8YFLogxK
U2 - 10.1148/radiology.190.1.8259417
DO - 10.1148/radiology.190.1.8259417
M3 - Article
C2 - 8259417
AN - SCOPUS:0028147325
SN - 0033-8419
VL - 190
SP - 263
EP - 268
JO - Radiology
JF - Radiology
IS - 1
ER -