Fig. 2
From: Challenges with colorectal cancer staging: results of an international study
Lymph node staging issues in treatment-naive colorectal carcinoma. (a) Isolated tumor cells spanning <0.2 mm in aggregate (arrow) were staged as pN0(i+) by 47% of respondents, 48% assigned pN1, and 5% considered it to represent pN0 disease. b Acellular mucin in regional lymph node of treatment-naive tumor staged as pN0 by 67% of respondents and 33% classified this as pN1. (a–b H&E ×200 and 100, respectively)
