case_images: PMC5523510_01
case_images: Contrast-enhanced T1-weighted MR images, coronal (a) and sagittal (b) views, show a suprasellar mass lesion with cystic components
case_images: SNI-8-146-g001.jpg
case_images: PMC5523510_01_SNI-8-146-g001.jpg
case_images: F1
case_images: 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].
case_images: Both 11C-MeAIB PET (a) and 18F-FDG PET (b) show high accumulation in the suprasellar lesion
case_images: SNI-8-146-g002.jpg
case_images: PMC5523510_01_SNI-8-146-g002.jpg
case_images: F2
case_images: 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
case_images: MRS demonstrates elevated Cho peak in the tumor (TR/TE = 2000/32)
case_images: SNI-8-146-g003.jpg
case_images: PMC5523510_01_SNI-8-146-g003.jpg
case_images: F3
case_images: 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.