Journal of the Korean Society of Radiology (대한영상의학회지)

The Korean Society of Radiology (대한영상의학회)
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US Features of the Parathyroid Glands: An Intraoperative Surgical Specimen Study

부갑상선의 초음파 소견: 수술 중 수술 검체 연구

  • Wooyul Paik (Department of Radiology, Danwon General Hospital) ;
  • Jong Cheol Lee (Department of Otorhinolaryngology, Gangneung Asan Hospital, University of Ulsan College of Medicine) ;
  • Byeong-Joo Noh (Department of Pathology, Gangneung Asan Hospital, University of Ulsan College of Medicine) ;
  • Dong Gyu Na (Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine)
  • 백우열 (단원병원 영상의학과) ;
  • 이종철 (울산대학교 의과대학 강릉아산병원 이비인후과) ;
  • 노병주 (울산대학교 의과대학 강릉아산병원 병리과) ;
  • 나동규 (울산대학교 의과대학 강릉아산병원 영상의학과)
  • Received : 2022.07.20
  • Accepted : 2022.10.08
  • Published : 2023.05.01
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Abstract

Purpose This study aimed to evaluate the US features of the parathyroid glands (PTGs) using surgical specimens of normal PTGs obtained during thyroid surgery. Materials and Methods This study included 34 normal PTGs from 17 consecutive patients who underwent thyroid surgery between December 2020 and March 2021. All normal PTGs were histologically confirmed by intraoperative frozen-section biopsy for autotransplantation. Surgically resected parathyroid specimens were scanned in sterile normal saline using high-resolution US prior to autotransplantation. The US features of echogenicity (hyperechogenicity or hypoechogenicity), echotexture (homogeneous or heterogeneous), size, and shape (ovoid or round) were retrospectively evaluated. The echogenicity of the three PTGs was compared with that of the thyroid parenchyma of the resected thyroid specimens in two patients. Results All PTGs showed hyperechogenicity similar to that of gauze soaked in normal saline. Homogeneous hyperechogenicity was observed in 32/34 (94.1%) patients, and the echogenicity of the three PTGs was hyperechoic compared with that of the thyroid parenchyma. The long diameter of the PTGs ranged from 5.1 mm to 9.8 mm (mean, 7.1 mm) and the shape of the PTGs was ovoid in 33/34 (97.1%) patients. Conclusion The echogenicity of normal PTG specimens was consistently hyperechoic, and the small ovoid homogeneously hyperechoic structure was a characteristic US feature of the PTGs.

목적 이 연구는 갑상선 수술 중 절제된 정상 부갑상선 검체를 이용하여 부갑상선의 초음파 소견을 알아보고자 한다. 대상과 방법 2020년 12월부터 2021년 3월까지 갑상선 수술을 시행한 17명 환자의 34개 부갑상선을 분석하였다. 모든 정상 부갑상선은 자가이식전 동결 절편을 통해 조직학적으로 진단되었고 부갑상선 검체를 무균 생리식염수에 넣은 상태에서 고해상 초음파 영상을 얻었다. 부갑상선 검체의 초음파 에코(고에코, 저에코), 에코결(균일, 불균일), 크기, 및 모양(난원, 원형)을 후향적으로 분석하였다. 두 명의 환자에서 얻은 3개의 부갑상선 에코를 절제된 갑상선 실질 에코와 비교하였다. 결과 모든 부갑상선은 생리식염수에 적신 거즈의 에코와 유사한 고에코를 나타냈다. 균일한 고에코는 32개(94.1%)의 부갑상선에서 관찰되었고 3개의 부갑상선은 갑상선 실질보다 높은 에코를 나타냈다. 부갑상선의 장경은 5.1-9.8 mm (평균 7.1 mm)였고, 모양은 33개(97.1%)부갑상선에서 난원형을 보였다. 결론 부갑상선 검체의 에코는 모두 고에코를 나타냈고, 작은 크기의 균일한 고에코를 보이는 난원형 구조물은 부갑상선의 특징적 초음파 소견이었다.

Keywords

Acknowledgement

We would like to thank Kyeong Ran Jeong and Jin Yi Jeong for their assistance in performing ultrasound examinations and data acquisition.

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