[Imaging aspects of primary cerebral lymphoma].
Th CT and MRI appearance of 196 lymphomatous histologically proved lesions were rewied in 127 patients. A post contrast study was performed in all patients studied with CT; 118 lesions were also assessed before an iodine contrast injection. 40 lesions were both studied with CT and MRI, and 12 only with MRI. There is a single lesion in 86% of the cases with a supratentorial location in 87%. The lesion size is over 1 cm in 90% and 87% of the lesions appear with regular and sharp demarcation. A mild edema is associated in 86%. Most of the lesions display an infiltrative pattern with a soft mass effect on the surrounding cerebral parenchyma. The basal ganglion, corpus callosum and trigone location, or an infiltration of the periventricular ependyma, or a mirror pattern, appear strongly suggestive for a lesion of lymphomatous origin. The CT post contrast enhancement of the lesion is present in 99% and homogeneous in 82%.
Servive de Radiologie A, CHU, Poitiers.
P
P
Vandermarcq
C
C
Drapeau
J C
JC
Ferrie
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001480:Basal Ganglia Diseases / Q000175:diagnosis; D001929:Brain Edema / Q000175:diagnosis; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000473:pathology; D002551:Cerebral Ventricle Neoplasms / Q000473:pathology; D002648:Child; D003287:Contrast Media; D003337:Corpus Callosum / Q000473:pathology; D004805:Ependyma / Q000473:pathology; D005260:Female; D006801:Humans; D007455:Iodine; D008223:Lymphoma / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011856:Radiographic Image Enhancement; D015173:Supratentorial Neoplasms / Q000175:diagnosis; D014057:Tomography, X-Ray Computed
D003287:Contrast Media; D007455:Iodine