PT - JOURNAL ARTICLE AU - Guller, Dmitry AU - Bach, David TI - An 87-year-old man with a tympanic abdominal mass AID - 10.1503/cmaj.1040799 DP - 2005 Feb 15 TA - Canadian Medical Association Journal PG - 475--475 VI - 172 IP - 4 4099 - http://www.cmaj.ca/content/172/4/475.short 4100 - http://www.cmaj.ca/content/172/4/475.full SO - CMAJ2005 Feb 15; 172