Ritwik and Brannon Journal of Medical Case Reports 2012, 6:287 http://www.jmedicalcasereports.com/content/6/1/287 Consent This study was approved by the LSUHSC IRB (#6450), which oversees and approves all research projects con- ducted on humans, and also ensures that all research conducted meets ethical standards. The IRB approval obtained for this research project exempted obtaining individual consents from each of the patients on the grounds that it would be virtually impossible to get meaningful data in a retrospective study such as this if authorization is required; some of the pathology reports are up to 20 years old, dentists have lost contact with patients, and dentists periodically purge records, destroying all contact data. The research could not be practically conducted if a consent from each individual patient was required. Additional file Additional file 1: Table S1. Pleomorphic adenoma. Tabulation of patient demographics, lesion site, duration, bone involvement, treatment and follow-up information for pleomorphic adenoma. Table S2. Benign salivary gland tumors (non-PA type). Tabulation of patient demographics, lesion site, duration, bone involvement, treatment and follow-up information for cystadenoma, sialadenoma papilliferum, myoepithelioma, myoepithelioma plasmacytoid variant. Competing interests The authors declare that they have no competing interests. Authors’ contributions PR and RBB reviewed the clinical and histopatholgic data from the selected cases and the literature, and analyzed the data. RBB reviewed histopathologic microslides and confirmed the diagnosis for the cases from the LSUSD series. Both authors read and approved the final manuscript. Acknowledgment We wish to acknowledge Elizabeth Strother from the LSUSD and, associate director for dental library services, for her assistance in the preparation of this article. 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