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British Journal of Radiology 74 (2001),86-88 © 2001 The British Institute of Radiology

Case report

Pulmonary hypertension secondary to left-sided heart disease: a cause for ventilation–perfusion mismatch mimicking pulmonary embolism

V W K Au, FRCR, FRANZCR, D N Jones, MBBS, FRANZCR and J P Slavotinek, MBBS, FRANZCR

Division of Medical Imaging, Flinders Medical Centre, Bedford Park, Adelaide SA 5042, Australia

Ventilation–perfusion (V/Q) scans are commonly performed in patients with suspected pulmonary thromboembolism (PE). V/Q mismatch is typically attributed to PE. We describe a case in which a V/Q scan performed on a patient with advanced hypertrophic obstructive cardiomyopathy showed large areas of V/Q mismatch not due to PE. The mismatch was due to pulmonary hypertension secondary to left-sided heart disease. The pathophysiology is briefly reviewed.






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