Fig. 1

Imaging examinations. Whole body scintigraphy 3 days post the two doses of ¹³¹I (a 100 mCi for remnant ablation; b 200 mCi for cancer therapy) showed that there were no ¹³¹I–avid foci in the bilateral lungs (b). Diagnostic CT imaging (c and f, 3 months before getting pregnant, the maximum diameters of the largest lesions in the right and left lung were 3.75 mm and 6.66 mm, respectively; d and g, 21 months post cesarean section, the maximum diameters of the largest lesions in the right and left lung were 1.83 mm and 5.34 mm, respectively; e and h, 30 months post cesarean section, the largest lesion in the right lung was not seen and the maximum diameter of the largest lesion in the left lung was 4.88 mm) revealed shrinkage of metastatic foci without new lesions. Arrowhead, the largest lesion in the right lung; Arrow, the largest lesion in the left lung