Observer
Copyright ©2008 The WJG Press and Baishideng.
World J Gastroenterol. Jun 14, 2008; 14(22): 3461-3463
Published online Jun 14, 2008. doi: 10.3748/wjg.14.3461
Table 1 Comparison of SSA and TSA to TA-TVA-VA polyps
SSATSATA-TVA-VA
LocationRight colonThroughout, 60% leftThroughout, 60% left
ShapeFlatPedunculatedPedunculated
CytodysplasiaMinimalPresentPresent
GrowthBottom-upBottom-upTop-down
SerrationPresentPresentAbsent
Basal cryptDilation presentDilation absentDilation may be present
Horizontal cryptsPresentAbsentMay be present
Branched cryptsPresentAbsentMay be present
Basal serrationPresentAbsentAbsent
Nuclear shapeRound or ovalTall columnarTall columnar
CytoplasmEosinophilicEosinophilicBasophilic
Table 2 Comparison of SSA polyps and HP polyps
SSAHP
LocationRight colonRectosigmoid
ShapeFlatPedunculated or flat
Size> 5 mm< 5 mm
Cytologic dysplasiaMinimalAbsent
Basal crypt dilationYesNo
Horizontal cryptsYesNo
Branched cryptsYesNo
Basal crypt serrationYesNo
Nuclear shapeRound to ovalFlat or low columnar
Cytoplasmic eosinophiliaProminentNot prominent