False-positive Iodine-131 Scan Caused by Scab Tissue Uptake
TK Chow, WH Ma, WY Ho
Hong Kong J Radiol 2018;21:132-5
DOI: 10.12809/hkjr1816825
Whole-body Iodine-131 scintigraphy (I-131 WBS) is a common and useful method to detect residual thyroid tissue, local recurrence, or distant metastasis in differentiated thyroid cancer. However, radioiodine uptake is not only seen in thyroid tissue or tumours. Various false-positive findings in I-131 WBS due to physiological and pathological causes have been reported. This report describes an unusual cause of false-positive I-131 WBS due to radioiodine uptake in scab tissue.
Author affiliation(s):
TK Chow, WH Ma, WY Ho: Nuclear Medicine Unit, Department of Radiology, Queen Mary Hospital, Pokfulam, Hong Kong
中文摘要
因傷口結痂引致在碘-131全身掃描出現假陽性結果
周子傑、馬慧嫻、何偉然
碘-131全身掃描是一個常用於患有分化型甲狀腺癌病人的檢查，用以偵測殘餘甲狀腺組織、局部復發和遠端轉移。然而，碘-131不只積聚於甲狀腺組織或腫瘤中。不少文獻已發表因不同生理或病理原因，導致碘-131全身掃描出現假陽性結果。本文報告因傷口結痂引致在碘-131全身掃描時出現假陽性結果的病例。