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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Oral Oncol. 2015 Aug 17;51(11):985–990. doi: 10.1016/j.oraloncology.2015.08.003

Figure 1.

Figure 1

Defined classification system for extracapsular extension in nodal metastases. Grade 0 and 0c are considered to represent no extracapsular extension, while Grade 1 represents simple extracapsular extension with tumor cells invading perinodal soft tissue in the background of an at least partially preserved lymph node and Grade 2 represents nodal metastases where tumor cells have obliterated all nodal tissue and are just growing in irregular collections (so-called “soft tissue metastasis”).