1. Clinical Recognition of Pulmonary Embolism: Problem of Unrecognized and Asymptomatic Cases 
Jay H. Ryu, M.D., Eric J. Olson, M.D., Patricia A. Pellikka, M.D. 
Mayo Clinic Proceedings 
Volume 73, Issue 9, Pages (September 1998)
DOI: /
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2. Fig. 1
Schema of relationship between suspected and actual cases of pulmonary embolism (PE). Only a third of suspected PE cases are actually PE. Conversely, many cases of PE, including fatal ones, are unrecognized or undiagnosed.
Mayo Clinic Proceedings  , DOI: ( / )
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