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Contribution of computed tomography to ultrasound in predicting lateral lymph node metastasis in patients with papillary thyroid carcinoma

 Jung Hyun Yoon  ;  Ji Youn Kim  ;  Jin Young Kwak  ;  Kyung Hwa Han  ;  Eun-Kyung Kim  ;  Eun Joo Son  ;  Ji Hyun Youk  ;  Hee Jung Moon 
 Annals of Surgical Oncology, Vol.18(6) : 1734-1741, 2011 
Journal Title
 Annals of Surgical Oncology 
Issue Date
BACKGROUND: To evaluate the most accurate criteria using ultrasound (US) and contrast-enhanced computed tomography (CT) in predicting lateral lymph node metastasis in patients with papillary thyroid carcinoma (PTC). METHODS: A total of 122 lateral cervical lymph nodes of 113 patients diagnosed with PTC underwent preoperative US-guided fine-needle aspiration biopsy (US-FNAB) and CT. Degree of enhancement (DOE) was calculated by the differences of Hounsfield units (HU) between the lymph node and the ipsilateral sternocleiomastoideus muscle. Standard reference was set by surgical pathology results. Diagnostic performances of US, CT, and cutoff value for DOE were analyzed. RESULTS: Seventy lymph nodes (57.4%) were metastases, and 52 (42.6%) were benign. The cutoff value of DOE on CT was 35.7 HU. Diagnostic performance of CT including DOE of 35.7 HU was lower than US, but without significance (P = 0.321). When any suspicious CT feature was combined with the combination of suspicious US features, values of the area under the receiver operating characteristic curve decreased compared to the combinations of suspicious US features alone, 0.785 to 0.741, respectively (P = 0.225). CONCLUSIONS: Contrast-enhanced CT does not greatly improve diagnostic values of US in the diagnosis of metastatic lateral cervical lymph nodes in patients with PTC.
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1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실)
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원)
Yonsei Authors
곽진영(Kwak, Jin Young) ; 김은경(Kim, Eun Kyung) ; 김지연(Kim, Ji Youn) ; 문희정(Moon, Heui Jeong) ; 손은주(Son, Eun Ju) ; 육지현(Youk, Ji Hyun) ; 윤정현(Yoon, Jung Hyun) ; 한경화(Han, Kyung Hwa)
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