Abnormal Nuclear Membranous Staining Pattern by MLH1 Immunohistochemistry in Endometrial Cancer: A Diagnostic Pitfall and Clone-dependent Artifact. - Wang L; Jou D; Patel R; Malvar G; Germansky K; Hecht JL; Vyas M (International journal of gynecological pathology : official journal of the International Society of Gynecological Pathologists, 2026)