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. 2022 Aug 7;28(29):3960–3970. doi: 10.3748/wjg.v28.i29.3960

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©The Author(s) 2022. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/

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Case presentation. A: A 56-year-old man with upper RC, the nodule of TDs (size: 24 mm × 16 mm) had an irregular shape; B: A 44-year-old man with lower RC, the nodule of TDs (size: 14 mm × 11 mm) had a regular oval shape. It is difficult to distinguish TDs and LNM from conventional imaging findings. For these two patients, Rad-score of the largest peritumoral nodule achieved correct diagnosis (values = 0.98 and 0.97, respectively). RC: Rectal cancer; TDs: Tumor deposits; LNM: Lymph node metastasis.