18 F FDG and 68 Ga FAPI PET/CT Findings in a Pituitary Abscess Secondary to Tuberculous Meningitis.
Srijani Mandal, Ralph Emerson P, Girish K Parida et al.
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Case in brief
A patient presented with a pituitary abscess secondary to tuberculous meningitis, a rare and serious condition. Imaging with both 18 F FDG and 68 Ga FAPI PET/CT was performed, revealing the abscess. Notably, 68 Ga FAPI showed intense uptake with minimal background activity, enhancing the detection of this small lesion. The case was successfully managed following diagnosis.
What made this case unusual
This case is notable for being the first to document 68 Ga FAPI uptake in a pituitary abscess, showcasing its potential for improved visualization of such lesions.
Diagnostic / clinical pearl
Clinicians should consider 68 Ga FAPI PET/CT for enhanced detection of infectious or inflammatory lesions in the sellar region due to its superior tumor-to-background contrast.
Why it matters
The findings suggest that 68 Ga FAPI PET/CT may improve diagnostic accuracy for rare pituitary conditions, potentially influencing imaging protocols in similar cases.