"When a test is too good: how CT pulmonary angiograms find pulmonary emboli that do not need to be found"

BMJ Jul 2
http://www.bmj.com/content/347/bmj.f3368
"Conclusion— CT pulmonary angiography has reduced missed pulmonary embolism but seems to result in overdiagnosis. We need to learn which small emboli need treatment"