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  Indian J Med Microbiol
 

Figure 2: Patient 3 was a 55-year-old female, presented with headache for 1 month, axial MR sequences (arrows) show well-circumscribed mass along the occipital horn of left lateral ventricle, (a) iso-to-hypointense on T2-weighted image (b) enhancing on postcontrast T1-weighted image, with (d) restricted diffusion and (e) low apparent diffusion coefficient, hyperperfusion on MR perfusion sequence; MR spectroscopy was noncontributory. Although features were favoring PCNSL, age and rapid clinical deterioration raised the suspicion of glial tumor. Axial FET-PET (c and f) fused PET/CT images (arrows) showed increased tracer uptake in the mass, with a tumor-to-contralateral white mater ratio of 2.6 and 2.2 at 5 and 20 min. Biopsy was suggestive of the WHO Grade IV glioma – glioblastoma

Figure 2: Patient 3 was a 55-year-old female, presented with headache for 1 month, axial MR sequences (arrows) show well-circumscribed mass along the occipital horn of left lateral ventricle, (a) iso-to-hypointense on T2-weighted image (b) enhancing on postcontrast T1-weighted image, with (d) restricted diffusion and (e) low apparent diffusion coefficient, hyperperfusion on MR perfusion sequence; MR spectroscopy was noncontributory. Although features were favoring PCNSL, age and rapid clinical deterioration raised the suspicion of glial tumor. Axial FET-PET (c and f) fused PET/CT images (arrows) showed increased tracer uptake in the mass, with a tumor-to-contralateral white mater ratio of 2.6 and 2.2 at 5 and 20 min. Biopsy was suggestive of the WHO Grade IV glioma – glioblastoma