PMC5633052_01
Axial CT of the patient, frontobasal meningioma in the olfactory groove on the right side. Secondary finding: subacute intracerebral hemorrhage in the frontal aspect on the right side in January 2011.
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fig1
A whole-body MRI and a CT scan failed to provide unequivocal information besides a meningioma in the olfactory groove on the right side (Fig. 1).  
FGF-23 levels at various locations, determined by selective venous blood sampling. Based on Putz/Pabst: Sobotta. Atlas der Anatomie des Menschen (Atlas of Human Anatomy), 21. Aufl. (21st edition), Urban & Fischer, 2000.
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The highest FGF-23 values were noted in the right-sided jugular vein (1600 kRU/L), as shown in Fig. 2.  
FGF-23 levels in kRU/L over time (2011/2012).
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FGF-23 level was initially in the normal range (76 kRU/L), but rose two months after the intervention. Figure 3 shows the renewed rise in FGF-23 levels after the first resection. As shown in Fig. 3, the production of FGF-23 dropped initially and then rose to pathological levels.
The patient's bone scintigraphy showing a reduction in the intensity of bone remodeling, 'adult rickety rosary' sign and 'tie sign of sternum' in October 2014 (below) compared to a bone scintigraphy in 2010 (above).
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As shown in Fig. 3, the production of FGF-23 dropped initially and then rose to pathological levels.