A case of pseudoaneurysm of the left ventricle following apparent mild blunt wall trauma presents in a 12-year-old girl. Pseudoaneurysms are external to the left ventricular wall and communicate with the left ventricular cavity by a narrow neck. The diagnosis should be entertained in children presenting with a history of chest wall trauma, systolic murmur, wide-splitting of the second heart sound, and abnormal cardiac fluoroscopy. The fatal outcome of untreated posttraumatic pseudoaneurysms indicates surgical treatment.
O'Reilly RJ, Kazenelson G, Spellberg RD. Traumatic Pseudoaneurysm of the Left Ventricle. Am J Dis Child. 1970;120(3):252-254. doi:10.1001/archpedi.1970.02100080136016