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Correlation between maximal tumor diameter of fresh pathology specimens and computed tomography images in lung adenocarcinoma

Authors
 Chul Hwan Park  ;  Tae Hoon Kim  ;  Sungsoo Lee  ;  Duk Hwan Moon  ;  Heae Surng Park 
Citation
 PLoS One, Vol.14(1) : e0211141, 2019 
Journal Title
 PLoS One 
Issue Date
2019
Abstract
The authors compared maximal tumor diameters between fresh lung tissue and axial and multiplanar reformatted chest computed-tomography (CT) images in lung adenocarcinoma and investigated the factors affecting tumor-size discrepancies. This study included 135 surgically resected lung adenocarcinomas. An experienced pulmonary pathologist aimed to cut the largest tumor section and measured pathological tumor size (PTS) in fresh specimens. Radiological maximal tumor sizes (RTS) were retrospectively measured on axial (RTSax) and multiplanar reformatted (RTSre) chest CT images. Mean PTS, RTSax, and RTSre were 19.13 mm, 18.63 mm, and 20.80 mm, respectively. RTSre was significantly larger than PTS (mean difference, 1.68 mm; p<0.001). RTSax was also greater than PTS for 6-10-mm and 11-20-mm tumors. PTS and RTS were strongly positively correlated (RTSax, r2 = 0.719, p<0.001; RTSre, r2 = 0.833, p<0.001). The intraclass correlation coefficient was 0.915 between PTS and RTSax and 0.954 between PTS and RTSre. Postoperative down-staging occurred in 11.0% and 27.4% of tumors on performing radiological staging using RTSax and RTSre, respectively. Postoperative up-staging occurred in 12.3% and 1.4% of tumors on performing radiological staging using RTSax and RTSre, respectively. Multiple linear regression revealed that pleural dimpling (p = 0.024) was an independent factor affecting differences between PTS and RTSax. Specimen type (p = 0.012) and tumor location (p = 0.020) were independent factors affecting differences between PTS and RTSre. In conclusion, RTSre was significantly larger than PTS and caused postoperative down-staging in 27.4% of the tumors. Reliability analysis revealed that RTSre was more strongly correlated with PTS than RTSax. Specimen type and anatomical tumor location influenced the measured size differences between PTS and RTSre.
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DOI
10.1371/journal.pone.0211141
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Thoracic and Cardiovascular Surgery (흉부외과학교실) > 1. Journal Papers
Yonsei Authors
김태훈(Kim, Tae Hoon) ORCID logo https://orcid.org/0000-0003-3598-2529
문덕환(Moon, Duk Hwan)
박철환(Park, Chul Hwan) ORCID logo https://orcid.org/0000-0002-0004-9475
이성수(Lee, Sung Soo) ORCID logo https://orcid.org/0000-0001-8998-9510
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/167518
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