Correction to: British Journal of Cancer (2015) 112, 1766–1771; doi:10.1038/bjc.2015.141; published online 5 May 2015
Following the publication of this manuscript, the authors have noticed an error in Table 1.
Table 1. AJCC 7th edition N staging system and the modified N staging system.
| Stage | AJCC 7th edition N staging system | Modified N staging system |
|---|---|---|
| N0 | No regional lymph node metastasis | No regional lymph node metastasis |
| Nx | Regional lymph nodes cannot be assessed | Regional lymph nodes cannot be assessed |
| N1 | Metastasis in a single inguinal lymph node | Metastasis in one to two unilateral inguinal lymph nodes without ENE |
| N2 | Metastasis in multiple or bilateral inguinal lymph nodes | Metastasis in three unilateral or metastasis in two to three bilateral inguinal lymph nodes without ENE |
| N3 | Unilateral or bilateral ENE of LNM or pelvic lymph node(s) | Unilateral or bilateral metastasis in four or more inguinal lymph nodes without ENE, ENE of LNM or pelvic lymph node(s) |
Abbreviations: ENE=extranodal extension; LNM=lymph node metastasis.
The sixth line, which reads ‘N2 metastasis in multiple or bilateral inguinal lymph nodes & Unilateral or bilateral metastasis in four or more inguinal lymph nodes without ENE, ENE of LNM or pelvic lymph nodes', should be deleted. The correct table is reproduced below.