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  Indian J Med Microbiol
 

Figure 6: A case of a 63-year-old female of left frontoparietal gliosarcoma (Gr IV), 18-month postsurgery and radiotherapy. Regional positron emission tomography/magnetic resonance imaging shows: postopeerative cavity with heterogeneously enhancing lesion in the tumor bed with nodular component in its anterosuperior part: axial contrast-enhanced image (a) showing increased perfusion: axial regional cerebral blood volume map (b), increased 18F-Fluoro ethyl tyrosine tracer uptake: axial positron emission tomography/magnetic resonance imaging image (c) and increased choline in the proton magnetic resonance spectroscopy (d) suggesting recurrence. The diffusely enhancing inferior component: axial postcontrast image (e) with no increased perfusion: axial regional cerebral blood volume map (f) or tracer uptake: axial positron emission tomography/magnetic resonance imaging image (g) suggesting posttreatment radiation effect: proved on histology

Figure 6: A case of a 63-year-old female of left frontoparietal gliosarcoma (Gr IV), 18-month postsurgery and radiotherapy. Regional positron emission tomography/magnetic resonance imaging shows: postopeerative cavity with heterogeneously enhancing lesion in the tumor bed with nodular component in its anterosuperior part: axial contrast-enhanced image (a) showing increased perfusion: axial regional cerebral blood volume map (b), increased 18F-Fluoro ethyl tyrosine tracer uptake: axial positron emission tomography/magnetic resonance imaging image (c) and increased choline in the proton magnetic resonance spectroscopy (d) suggesting recurrence. The diffusely enhancing inferior component: axial postcontrast image (e) with no increased perfusion: axial regional cerebral blood volume map (f) or tracer uptake: axial positron emission tomography/magnetic resonance imaging image (g) suggesting posttreatment radiation effect: proved on histology