Correction to: Laboratory Investigation https://doi.org/10.1038/s41374-021-00612-7, published online 21 May 2021

The original version of this article unfortunately contained a mistake. Due to the submission of Table 1 in a separate file, the following citations were missing in the references, leading to an incorrect linking in the table caption. The missing reference are:

(A) Sheldon CA, Clayman RV, Gonzalez R, Williams RD, Fraley EE. Malignant urachal lesions. J Urol. 131, 1–8 (1984).

(B) Ashley RA, Inman BA, Sebo TJ, Leibovich BC, Blute ML, Kwon ED, et al. Urachal carcinoma: clinicopathologic features and long-term outcomes of an aggressive malignancy. Cancer. 107, 712–720 (2006).

(C) Brierley J, Gospodarowicz MK, Wittekind C. TNM classification of malignant tumors. In: Brierley J, Gospodarowicz MK, Wittekind C, editors. Chichester, West Sussex, UK, Hoboken, NJ: John Wiley & Sons Inc; 2017.

The authors apologize for the mistake. The original article has been corrected.