Correction to: Japanese Journal of Radiology (2020) 38:821–832 https://doi.org/10.1007/s11604-020-00982-w

In the original publication of this paper Table 1 has been mistakenly published without the entry below:

Extrinsic tongue muscle invasion.

The corrected Table 1 is given in this Correction.

Table 1 T categorization of the oral cavity cancer in the American Joint Committee on Cancer (AJCC) Cancer Staging Manual, 8th edition