Fig. 3: Schematic illustration of summary findings of this study.

α-syn SAA positivity was high in patients with MIBG abnormal LBD. From previous reports, these patients should have Lewy bodies at least in the cardiac sympathetic system and substantia nigra in PD. However, α-syn SAA positivity was low in patients with MIBG normal PD. Although neuropathological data is unavailable at this point, from previous reports, most of the patients with non-young-onset and non-familial PD should have Lewy bodies at least in the substantia nigra. (The elements of the figure were created by the author using Adobe Illustrator and Microsoft PowerPoint).