487 447

Cited 0 times in

Preoperative staging of papillary thyroid carcinoma : comparison of ultrasonography and computed tomography

Other Titles
 유두상 갑상선암의 수술전 병기결정에 있어서 초음파와 CT의 비교 
Authors
 최지수 
Issue Date
2009
Description
Dept. of Medicine/석사
Abstract
[한글]



[영문]

Objective. To compare the diagnostic accuracies of ultrasonography (US) and computed tomography (CT) for preoperative evaluation of primary tumors and cervical lymph nodes in patients with papillary thyroid carcinoma (PTC), and to determine whether CT provides additional diagnostic value compared to US alone in these patients.Materials and Methods. The study population consisted of 299 consecutive patients with pathologically proven PTC. We assessed the diagnostic accuracies of US, CT, and combined US and CT [US/CT] for the evaluation of primary tumors and lymph node metastasis. We performed subgroup analysis to compare papillary thyroid microcarcinomas (PTMC, 10 mm or less in maximum diameter) with PTC greater than 1 cm in maximum diameter.Results. US predicted extrathyroidal tumor extension and bilateral thyroid lobe malignancy more accurately than CT (p<0.05) for overall lesions as well as for the 2 subgroups. For predicting central node (Ⅵ) metastasis, CT showed higher sensitivity than US alone (p=0.040) for overall lesions. Although US/CT showed higher sensitivity compared to US alone in predicting central node metastases for the 2 subgroups, US/CT did not reach statistical significance in sensitivity for PTMC. US alone and US/CT showed higher sensitivity than CT in predicting lateral node (levels Ⅱ to Ⅴ) metastasis, however, there was no significant difference in diagnostic values between US and US/CT for overall lesions or for the 2 subgroups (p>0.05).Conclusions. High-resolution US can provide an accurate preoperative evaluation of extrathyroidal tumor extension and lateral lymph node metastasis. CT showed higher sensitivity than US alone in detecting central lymph node metastasis for overall lesions. For PTMC, however, there was no significant difference in diagnostic accuracy between US, CT, and US/CT.
Files in This Item:
T011228.pdf Download
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 2. Thesis
Yonsei Authors
Choi, Ji Soo(최지수)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/125036
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse

Links