The Korean Journal of Nuclear Medicine (대한핵의학회지)

The Korean Society of Nuclear Medicine (대한핵의학회)
권호 표지

A Case of Thymoma Misdiagnosed as Parathyroid Adenoma on Tc-99m pertechnetate/Tl-201 Subtraction Scintigraphy

Tc-99m pertechnetate/Tl-201 감영 신티그라피에서 부갑상선 선종으로 오인된 흉선종 1예

  • Chung, Yong-An (Department of Nuclear Medicine, Kangnam St. Mary's Hospital The Catholic University of Korea) ;
  • Yoo, Ie-Ryung (Department of Nuclear Medicine, Kangnam St. Mary's Hospital The Catholic University of Korea) ;
  • Kim, Sung-Hoon (Department of Nuclear Medicine, Kangnam St. Mary's Hospital The Catholic University of Korea) ;
  • Chung, Soo-Kyo (Department of Nuclear Medicine, Kangnam St. Mary's Hospital The Catholic University of Korea) ;
  • Wang, Young-Pil (Department of Chest Surgery, Kangnam St. Mary's Hospital The Catholic University of Korea) ;
  • Jung, Ji-Han (Department of Clinical Pathology, Kangnam St. Mary's Hospital The Catholic University of Korea) ;
  • Lee, Kyo-Young (Department of Clinical Pathology, Kangnam St. Mary's Hospital The Catholic University of Korea) ;
  • Kim, Byung-Kee (Department of Clinical Pathology, Kangnam St. Mary's Hospital The Catholic University of Korea)
  • 정용안 (가톨릭대학교 의과대학 핵의학과) ;
  • 유이령 (가톨릭대학교 의과대학 핵의학과) ;
  • 김성훈 (가톨릭대학교 의과대학 핵의학과) ;
  • 정수교 (가톨릭대학교 의과대학 핵의학과) ;
  • 왕영필 (가톨릭대학교 의과대학 흉부외과) ;
  • 정지한 (가톨릭대학교 의과대학 임상병리과) ;
  • 이교영 (가톨릭대학교 의과대학 임상병리과) ;
  • 김병기 (가톨릭대학교 의과대학 임상병리과)
  • Published : 2001.08.30
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Abstract

A large superior mediastinal mass was found incidentally by ultrasonography in a 60-year-old man. There was an abnormal accumulation of Tl-201 in the lower pole of left thyroid gland, extending into left superior mediastinum on Tc-99m pertechnetate/Tl-201 subtraction scan. Laboratory findings relating thyroid and parathyroid were all within normal range. We considered the mass as a non-functioning parathyroid adenoma tentatively. However, subsequent surgery and pathologic examination revealed the mass to be a benign mixed thymoma. We report a case of patient with thymoma showing unusual Tc-99m pertechnetate/Tl-201 subtraction imaging and laboratory findings, and suggest to consider the possibility of other mediastinal tumors rather than parathyroid adenoma.

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