Findings
CT
- Round, hyperattenuating mass in the left frontal lobe with surrounding vasogenic edema
MRI
- T1 hypointense, T2 isointense mass with a rim of relative T1 signal hyperintensity and T2 signal hypointensity in the left frontal lobe measuring 3.4 x 3.3 x 3.2 cm with finger-like enhancing projections and a satellite enhancing lesion more superiorly in the left frontal lobe
- Homogeneous, diffuse corresponding enhancement and restricted diffusion
- No associated susceptibility artifact
- Surrounding vasogenic edema and corresponding mass effect resulting in local sulcal effacement, crowding of the left lateral ventricle, and left-to-right midline shift measuring 4 mm
- No downward herniation or hydrocephalus
Diagnosis
Primary CNS lymphoma (PCNSL)
Key Imaging Features
Become a PRO member to unlock the key imaging features
Differential Diagnosis
Become a PRO member to unlock the differential diagnosis
Discussion
Pearls
Become a PRO member to unlock the pearls