18F-FDOPA PET Imaging in Prolactinoma

Abstract: Pituitary macroadenoma constitutes a frequently misdiagnosed benign tumor. We report herein a case where such macroadenoma, a prolactinoma, was incidentally discovered in a 63-year-old man who had been referred to 18F-FDG PET and 18F-FDOPA PET imaging for a pharmacoresistant epilepsy. An increased uptake was documented for both radiotracers within the sellar region, although with a much higher contrast for 18F-FDOPA than for 18F-FDG. This case presents an increased uptake documented within a prolactinoma owing to the high contrast and image quality provided by 18F-FDOPA PET.

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