PMC3971872_01
FDG-PET showing the pulmonary lesion in the upper lobe (a) transaxial low dose CT image, with midly increased metabolism (b) transaxial PET image, fused transaxial section and maximum intensity projection image (c and d).
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figure1
At this site, the maximal standardised uptake value corrected for body weight (SUV bw_max) was 1.2 (Figures 1a-d).
(a) Meningotheliod feature constituted by whorl of spindle cells. (H&E 20x). (b) Microcystic feature of small cells, with a clear cytoplasm (H&E 20x). (c) Atypical mitosis in a spindle cell area of meningioma typically observed in atypical meningioma of CNS (H&E 40x).
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figure2
Microscopically, it was composed of bundles of mesenchymal and spindle cells, often arranged in whorls, with fibroblastic, meningeal, and microcystic features (Figures 2a and b). Atypical mitotic figures (4/10 HPF) were present (Figure 2c).