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. 2021 Sep 20;11:727991. doi: 10.3389/fonc.2021.727991

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Copyright © 2021 Zhang, Zhang, Yu, Sun, Miao, Liu, Li, Yi and An

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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MRI images in T1 with contrast of a posterior wall cancer patient. (A) The primary focus of posterior wall cancer. (B) The left retropharyngeal lymphnode metastasis. (C) The metastatic lymphnode in right Level II.