Distinct molecular alterations in complex endometrial hyperplasia (CEH) with and without immature squamous metaplasia (squamous morules).

Abstract excerpt

Several molecular alterations, most commonly PTEN mutations but also K-ras mutations, microsatellite instability, and beta-catenin mutations have been detected in endometrioid endometrial carcinoma (EEC). Specifically, mutations in the beta-catenin gene are seen in 15% to 20% of EECs, whereas immunohistochemical expression of beta-catenin ranges from 13% to 44%, nuclear staining being concentrated in areas of...

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