Abstract:
BACKGROUND:The clinical utility of relative and absolute grading criteria for submucosal invasion in T1 colorectal carcinomas has been controversial. METHODS:In 51 T1 colorectal carcinomas, depth of submucosal invasion was graded either according to a modified Haggitt's classification (a relative criterion) or by direct measurement using a micrometer (an absolute criterion), and immunostaining for E-cadherin, alpha-catenin, beta-catenin, matrilysin, and CD44 variant 6 was performed on formalin-fixed, paraffin-embedded sections. The associations between lymph node metastasis or local recurrence (locoregional failure) and tumor budding, and clinicopathologic parameters and immunoreactivity were examined statistically. RESULTS:By univariate analysis, tumor budding, histology, and the co-expression pattern of nuclear beta-catenin and CD44 variant 6 were significantly associated with locoregional failure. The relative and absolute grading of submucosal invasion were not significantly associated with locoregional failure. Multivariate analysis showed that tumor budding alone was significantly associated with locoregional failure, and the association between the co-expression pattern of nuclear beta-catenin and CD44 variant 6, and locoregional failure was marginally significant ( P = 0.0502). Lymphatic invasion and absolute grading of depth and width of submucosal invasion were significantly associated with tumor budding, and the associations between tumor budding, and histologic differentiation and membranous alpha-catenin expression were marginally significant ( P = 0.06; P= 0.08), whereas, a relative grading of submucosal invasion was not significant ( P = 0.58). Analysis of variance showed that histologic differentiation and lymphatic invasion were independently and significantly associated with tumor budding ( P = 0.005; P < 0.001). CONCLUSIONS:These results suggest that the grading of submucosal invasion, either relative or absolute, may not be a useful risk factor for lymph node metastasis or local recurrence in T1 colorectal carcinomas.
journal_name
J Gastroenteroljournal_title
Journal of gastroenterologyauthors
Masaki T,Sugiyama M,Matsuoka H,Abe N,Izumisato Y,Goto A,Sakamoto A,Atomi Ydoi
10.1007/s005350300004subject
Has Abstractpub_date
2003-01-01 00:00:00pages
37-44issue
1eissn
0944-1174issn
1435-5922journal_volume
38pub_type
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