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Article History

Received: 15 April 2020

Revised: 14 August 2020

Accepted: 9 October 2020

First Online: 13 November 2020

Compliance with ethical standards

:

: The scientific guarantor of this publication is Jung Hoon Kim, M.D., PhD.

: The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.

: Bora Lee, MS, has significant statistical expertise. No complex statistical methods were necessary for this paper.

: This retrospective study was approved by our institutional review board, and patient informed consent was waived.

: Institutional Review Board approval was obtained (IRB No. 1702-011-829).

: Among 151 patients with GB cancer who underwent R0 resection were enrolled in our study, 48 patients have been previously reported in our previous paper that published ER (<i>Eur Radiol</i>. 2019 Dec; 29(12):6458-6468). However, the study purposes of these two studies were different. The previous paper that published ER was to focus on the prediction of residual tumor (R) classification in patients with a surgery for GB cancer, using preoperative CT, in one institution. However, this study was to focus on developing a prognostic nomogram for patients undergoing R0 resection for GB cancer based on preoperative CT from two institutions. We attached a PDF file previously reported in our paper that published ER (<i>Eur Radiol</i>. 2019 Dec; 29(12):6458-6468).

: • retrospective• diagnostic or prognostic study• multicenter study