False Positive Findings on I-131 WBS and SPECT/CT in Patients with History of Thyroid Cancer: Case Series

Figure 2

(a) Anterior planar view from a postablation I-131 WBS shows satisfactory targeting of radiotracer in the neck with an additional incidental focus of activity in the region of the right scrotum. (b) Sagittal sonographic image of the right scrotum shows a hypoechoic avascular lesion in the right epididymal head likely representing a spermatocele. (c) SPECT/CT localizes the area of radioiodine uptake to the right epididymal lesion. (d) Anterior and posterior planar views from a postablation I-131 WBS show expected radiotracer uptake in the neck as well as two incidental foci projecting over the dome of the liver (arrowhead) and in the left lower quadrant of the abdomen (arrow). (e) SPECT/CT localizes the area of radioiodine uptake to an exophytic cyst arising from the inferior pole of the left kidney. (f) SPECT/CT localizes the second radioiodine avid focus to a calcified granuloma in the dome of the liver.

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