TY - JOUR T1 - An 87-year-old man with a tympanic abdominal mass JF - Canadian Medical Association Journal JO - CMAJ SP - 475 LP - 475 DO - 10.1503/cmaj.1040799 VL - 172 IS - 4 AU - Dmitry Guller AU - David Bach Y1 - 2005/02/15 UR - http://www.cmaj.ca/content/172/4/475.abstract ER -