68Ga-Prostate-Specific Membrane Antigen PET/CTで検出された前立腺特異的膜抗原陽性髄膜腫

Prostate-Specific Membrane Antigen-Avid Meningioma Detected in 68Ga-Prostate-Specific Membrane Antigen PET/CT.

• Nitin Gupta
• Ritu Verma
• Ethel S Belho

抄録

前立腺特異抗原値が3.32 ng/mL、グリソンスコア4（3＋4）の前立腺腺癌と診断された64歳男性が、治療前の病期分類のためにGa-prostate-specific membrane antigen PET/CT検査を受診した。前立腺特異的膜抗原陽性の病変が前立腺右葉に認められ、既知の原発病変に対応していた。脳の右頭頂葉に前立腺特異的膜抗原陽性病変を認め、髄膜腫と思われた。後に行われたMRI検査で、脳の病変は髄膜腫であることが確認された。

A 64-year-old man with recently diagnosed prostate adenocarcinoma with a total prostate-specific antigen level of 3.32 ng/mL and Gleason score 4 (3 + 4) was referred for Ga-prostate-specific membrane antigen PET/CT scan for pretreatment staging. Prostate-specific membrane antigen-avid lesion was noted in the right lobe of the prostate gland, corresponding to the known primary lesion. Note was made of another prostate-specific membrane antigen-avid lesion in the right parietal lobe of brain, likely meningioma. MRI scan performed later confirmed the brain lesion to be meningioma.