Received: 29 October 2021
Accepted: 7 March 2022
First Online: 16 March 2022
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. The study design was approved by the Institutional Review Board of the Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan (approval number: 2019-1032). While collecting the data for this study, all personal identifying information was removed. Informed consent was obtained from each patient for the use of pathological specimens and imaging data for research purposes.
: Not applicable.
: Y.H. reports a Grant-in-Aid for Early-Career Scientists [21K15962] and personal fees for specific speaking and teaching commitments involving honoraria from Olympus Corp. and Kaken Pharmaceutical Co., Ltd. T.Y. reports research grants from the Takeda Science Foundation and a Grant-in-Aid for Scientific Research (C) [19K08408]. The remaining authors declare that they have no competing interests.