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Difference between revisions of "Gastrointestinal tract polyps"
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Gastrointestinal tract polyps (view source)
Revision as of 14:55, 15 December 2011
, 14:55, 15 December 2011→Poor outcome predictors
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#Lymphovascular invasion. | #Lymphovascular invasion. | ||
#High-grade tumour budding. | #High-grade tumour budding. | ||
#*Tumour bud = 1-4 cell(s); "high-grade budding" is >=10 tumour buds in a | #*Tumour bud = 1-4 cell(s); "high-grade budding" is >=10 tumour buds in a field of 0.385 mm<sup>2</sup>.<ref>{{Cite journal | last1 = Ueno | first1 = H. | last2 = Murphy | first2 = J. | last3 = Jass | first3 = JR. | last4 = Mochizuki | first4 = H. | last5 = Talbot | first5 = IC. | title = Tumour 'budding' as an index to estimate the potential of aggressiveness in rectal cancer. | journal = Histopathology | volume = 40 | issue = 2 | pages = 127-32 | month = Feb | year = 2002 | doi = | PMID = 11952856 }}</ref> | ||
#**If the microscope has a 22 mm eye piece and... | |||
#***A 20x objective, the field is approximately 0.950 mm<sup>2</sup> -- to match the area/bud -- it would be 24.68 buds/0.950 mm<sup>2</sup>. | |||
#***A 40x objective, the field is approximately 0.238 mm<sup>2</sup> -- to match the area/bud -- it would be 6.17 buds/0.238 mm<sup>2</sup>. | |||
#Extensive submucosal invasion. | #Extensive submucosal invasion. | ||
#*>= 4 mm width ''or'' >= 2 mm depth. | #*>= 4 mm width ''or'' >= 2 mm depth. | ||