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Difference between revisions of "Lymph node metastasis"
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*Colorectal cancer - 12 lymph nodes. | *Colorectal cancer - 12 lymph nodes. | ||
*Esophageal cancer - no minimum as per UICC/AJCC staging - based on Li ''et al.''<ref name=pmid23124992>{{Cite journal | last1 = Li | first1 = Q. | last2 = Wu | first2 = SG. | last3 = Gao | first3 = JM. | last4 = Xu | first4 = JJ. | last5 = Hu | first5 = LY. | last6 = Xu | first6 = T. | title = Impact of esophageal cancer staging on overall survival and disease-free survival based on the 2010 AJCC classification by lymph nodes. | journal = J Radiat Res | volume = 54 | issue = 2 | pages = 307-14 | month = Mar | year = 2013 | doi = 10.1093/jrr/rrs096 | PMID = 23124992 }}</ref> - several studies give different numbers (18 lymph nodes Greenstein ''et al.'',<ref name=pmid18224663>{{Cite journal | last1 = Greenstein | first1 = AJ. | last2 = Litle | first2 = VR. | last3 = Swanson | first3 = SJ. | last4 = Divino | first4 = CM. | last5 = Packer | first5 = S. | last6 = Wisnivesky | first6 = JP. | title = Effect of the number of lymph nodes sampled on postoperative survival of lymph node-negative esophageal cancer. | journal = Cancer | volume = 112 | issue = 6 | pages = 1239-46 | month = Mar | year = 2008 | doi = 10.1002/cncr.23309 | PMID = 18224663 }}</ref> 23 lymph nodes Peyre ''et al.''<ref name=pmid18936567>{{Cite journal | last1 = Peyre | first1 = CG. | last2 = Hagen | first2 = JA. | last3 = DeMeester | first3 = SR. | last4 = Altorki | first4 = NK. | last5 = Ancona | first5 = E. | last6 = Griffin | first6 = SM. | last7 = Hölscher | first7 = A. | last8 = Lerut | first8 = T. | last9 = Law | first9 = S. | title = The number of lymph nodes removed predicts survival in esophageal cancer: an international study on the impact of extent of surgical resection. | journal = Ann Surg | volume = 248 | issue = 4 | pages = 549-56 | month = Oct | year = 2008 | doi = 10.1097/SLA.0b013e318188c474 | PMID = 18936567 }}</ref>). | *Esophageal cancer - no minimum as per UICC/AJCC staging - based on Li ''et al.''<ref name=pmid23124992>{{Cite journal | last1 = Li | first1 = Q. | last2 = Wu | first2 = SG. | last3 = Gao | first3 = JM. | last4 = Xu | first4 = JJ. | last5 = Hu | first5 = LY. | last6 = Xu | first6 = T. | title = Impact of esophageal cancer staging on overall survival and disease-free survival based on the 2010 AJCC classification by lymph nodes. | journal = J Radiat Res | volume = 54 | issue = 2 | pages = 307-14 | month = Mar | year = 2013 | doi = 10.1093/jrr/rrs096 | PMID = 23124992 }}</ref> - several studies give different numbers (18 lymph nodes Greenstein ''et al.'',<ref name=pmid18224663>{{Cite journal | last1 = Greenstein | first1 = AJ. | last2 = Litle | first2 = VR. | last3 = Swanson | first3 = SJ. | last4 = Divino | first4 = CM. | last5 = Packer | first5 = S. | last6 = Wisnivesky | first6 = JP. | title = Effect of the number of lymph nodes sampled on postoperative survival of lymph node-negative esophageal cancer. | journal = Cancer | volume = 112 | issue = 6 | pages = 1239-46 | month = Mar | year = 2008 | doi = 10.1002/cncr.23309 | PMID = 18224663 }}</ref> 23 lymph nodes Peyre ''et al.''<ref name=pmid18936567>{{Cite journal | last1 = Peyre | first1 = CG. | last2 = Hagen | first2 = JA. | last3 = DeMeester | first3 = SR. | last4 = Altorki | first4 = NK. | last5 = Ancona | first5 = E. | last6 = Griffin | first6 = SM. | last7 = Hölscher | first7 = A. | last8 = Lerut | first8 = T. | last9 = Law | first9 = S. | title = The number of lymph nodes removed predicts survival in esophageal cancer: an international study on the impact of extent of surgical resection. | journal = Ann Surg | volume = 248 | issue = 4 | pages = 549-56 | month = Oct | year = 2008 | doi = 10.1097/SLA.0b013e318188c474 | PMID = 18936567 }}</ref>). | ||
====Counting lymph nodes==== | |||
The number of lymph nodes is usually based on: | |||
#Number of possible lymph nodes at the time of gross or [[cut-up]]. | |||
#Number of tissue fragments with definite lymph node. | |||
#*Lymph node = lymphoid tissue + capsule. | |||
#Whether tumour containing nodules have lymphoid tissue associated with them and the anatomical [[site]]. | |||
Notes: | |||
*Generally, the number of lymph nodes in a block should not exceed the number seen at gross. | |||
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