Abstract
The aim of this study was to examine the associations among the haphazard invasive patterns, defined as directionless infiltration into the myometrium; expression of key proteins; tumor infiltrative lymphocytes (TILs); and the prognosis of gade-3 endometrioid carcinoma (G3EC). Between 1990 and 2013, patients with G3EC who underwent surgery at our hospital were identified. Invasive patterns were classified into either haphazard, infiltrative, or expansile patterns. The estrogen, progesterone, androgen receptor, cytokeratin 5/6, epidermal growth factor receptor, E-cadherin, snail-2, vimentin, ZEB1, chromogranin A, synaptophysin, MLH1, MSH2, MSH6, and PMS2 levels were evaluated by immunochemical analysis. The degree of strong or weak lymphocyte infiltration (LI) were evaluated using zone formation of LI at the invasive front. Haphazard, infiltrative, and expansile patterns were discovered in 8 (18%), 6 (13%), and 31 (69%) cases, respectively. Cases with the haphazard patterns were diagnosed at a more advanced stage (p < 0.01) and recurred more frequently (p < 0.01). There were statistical differences in progression-free survival (PFS) and overall survival (OS) between the three groups (PFS; p < 0.01: OS; p < 0.01). In multivariate...Continue Reading
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