Kumar, K. KrishnaMenon, GirishNair, S.Radhakrishnan, V. V.2012-12-042012-12-042008JOURNAL OF CLINICAL NEUROSCIENCE. 15; 11; 1293-1295http://dx.doi.org/10.1016/j.jocn.2007.09.010http://www.ncbi.nlm.nih.gov/pubmed/18824356https://dspace.sctimst.ac.in/handle/123456789/1014Rosai-Dorfman disease (RDD) otherwise known as simus histiocytosis with massive lymphadenopathy is an uncommon benign systemic histio-proliferative disease characterised by massive lymphadenopathy particularly in the head and neck region and is often associated with extra-nodal involvement. We report a case in which RDD was mistaken for a chronic subdural hematoma and surgery was attempted. (C) 2007 Elsevier Ltd. All rights reserved.Neurosurgery