Generic TNM coding for sentinel nodes |
pNX (sn) Sentinel lymph node could not be assessed |
pN0 (sn) No sentinel node metastasis |
pN1 (sn) Sentinel node metastasis |
Sentinel nodes with micrometastasis only are identified by (mi) |
pN1 (sn) (mi) single ipsilateral node with micrometastasis |
pN2 (sn) (mi) multiple ipsilateral nodes with micrometastasis |
Sentinel nodes with isolated tumor cells are coded separately for morphological and nonmorphological techniques such as PCR or flow cytometry |
pN0 (i−)(sn) No sentinel lymph node metastasis histologically, negative morphological findings for isolated tumor cells (ITC) |
pN0 (i+)(sn) No sentinel lymph node metastasis histologically, positive morphological findings for isolated tumor cells (ITC) |
pN0 (mol−)(sn) No sentinel lymph node metastasis histologically, negative nonmorphological findings for isolated tumor cells (ITC) |
pN0 (mol+)(sn) No sentinel lymph node metastasis histologically, positive nonmorphological findings for isolated tumor cells (ITC) |