PMC5523510_01
Contrast-enhanced T1-weighted MR images, coronal (a) and sagittal (b) views, show a suprasellar mass lesion with cystic components
SNI-8-146-g001.jpg
PMC5523510_01_SNI-8-146-g001.jpg
F1
The lesion was hypointense on T1-weighted images (WI), hyperintense on T2-WI, and showed marked enhancement after the administration of contrast material [Figure 1].
Both 11C-MeAIB PET (a) and 18F-FDG PET (b) show high accumulation in the suprasellar lesion
SNI-8-146-g002.jpg
PMC5523510_01_SNI-8-146-g002.jpg
F2
MeAIB] standardized uptake value (SUV) max = 9.8] consistent with enhanced lesion on MRI, and lesion to gray matter ratio (LGR) was 56.9 [Figure 2]. 18F-FDG PEt also showed high uptake of FDG (SUVmax = 9.97 and LGR = 1.6) [Figure 2]. MRS demonstrated that choline/creatine (Cho/Cr) peak-height and
MRS demonstrates elevated Cho peak in the tumor (TR/TE = 2000/32)
SNI-8-146-g003.jpg
PMC5523510_01_SNI-8-146-g003.jpg
F3
Cho/Cr peak-area values were 2.85 and 2.33, respectively (TR/TE = 2000/32) [Figure 3]. Cho/N-acetylaspartate (NAA) peak-height and Cho/NAA peak-area values were 1.32 and 0.93, respectively. 11C-MeAIB PET, 18F-FDG PET, and MRS data suggested a malignant behavior.