HSP90AB1 and ductal breast carcinoma in situ: Hsp90 (isoform not specified in the original publication) levels were assessed along the entire continuum of breast ductal lesions including ductal hyperplasia without atypia (DHWithoutA), atypical ductal hyperplasia (ADH), invasive ductal carcinoma (IDC), and ductal carcinoma in situ (DCIS) [94,95].