PT - JOURNAL ARTICLE AU - P Bhogal AU - G Bhatnagar AU - J Manieson AU - T Booth AU - C Prendergast TI - An unusual case of pneumocephalus AID - 10.1136/bcr.06.2010.3106 DP - 2011 Nov 02 TA - BMJ Case Reports PG - bcr0620103106 VI - 2011 4099 - http://casereports.bmj.com/content/2011/bcr.06.2010.3106.short 4100 - http://casereports.bmj.com/content/2011/bcr.06.2010.3106.full AB - The authors present an unusual cause of pneumocephalus in a previously fit and well female octogenarian who presented with acute onset altered level of consciousness and generalised weakness. Radiological imaging demonstrated widespread cerebritis with pneumocephalus and gas within the superior sagittal sinus. Blood culture grew Clostridium septicum, a virulent but rare organism that can infect normal tissues. The close association between C septicum and both haematological and bowel malignancies must be considered if this organism is cultured.