HIV positive 49 y/o male



Doctor's Information

Name : Hamidreza
Family : Haghighatkhah
Affiliation :Radiology Department,Shohada Tajrish Hospital,SBMU
Academic Degree : Associate Professor of Radiology
Email : This email address is being protected from spambots. You need JavaScript enabled to view it.
Resident : masoud atyabi


Case Section



Patient's Information

Gender : Male
Age : 49


Clinical Summary

HIV positive patient with recent headache


Imaging Findings

two round lesions in corticomedullary junction of left parietal lobe and right occipital lobe, which are iso signal on T1 and low signal on T2 and FLAIR associated with severe peripheral edema , and ring enhancement with central nodular enhancement.


Differential Diagnosis

cerebral toxoplasmosis - lymphoma


Final Diagnosis

cerebral toxoplasmosis


Discussion (Related Text)

Features that favour primary CNS lymphoma include: single lesion, subependymal spread, solid enhancement ,thallium SPECT positive, increased choline (Cho) on MRS. Features that favour cerebral toxoplasmosis include: multiple lesions, scattered though basal ganglia and corticomedullary junction, ring or nodular enhancement, thallium SPECT negative, decreased choline (Cho) on MRS



CT and MRI of the whole body(haaga)2009/ch3


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