case_images: PMC5317064_01
case_images: Chromosomal karyotyping showing 46, XY, der (21; 21) (q10; q10), +21 Down syndrome.
case_images: IJNM-32-19-g001.jpg
case_images: PMC5317064_01_IJNM-32-19-g001.jpg
case_images: F1
case_images: Scan appearance and uptakes were reported as consistent with Graves' disease [Figure 1].
case_images: Tc-99m thyroid scan with uptakes at 15 minutes postinjection
case_images: IJNM-32-19-g002.jpg
case_images: PMC5317064_01_IJNM-32-19-g002.jpg
case_images: F2
case_images: Chromosomal karyotyping confirmed 46, XY, der [21; 21] [q10; q10], +21 DS [Figure 2].