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CASE REPORT
Year : 2018  |  Volume : 17  |  Issue : 1  |  Page : 59-61

Bronchopulmonary sequestration as a cause of mismatched perfusion defect on single-photon emission computed tomography ventilation-perfusion scan


1 Department of Medical Imaging, Gold Coast University Hospital, Southport QLD 4215, Australia
2 Department of Medical Imaging, The Prince Charles Hospital, Chermside QLD 4032; Uniting Care Medical Imaging, The Wesley Hospital, Auchenflower 4066, Australia
3 Department of Medical Imaging, The Prince Charles Hospital, Chermside QLD 4032; School of Medicine, University of Queensland, Herston QLD 4029, Australia

Correspondence Address:
Michael A.S Kreltszheim
Department of Medical Imaging, Gold Coast University Hospital, 1 Hospital Blvd, Southport QLD 4215
Australia
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DOI: 10.4103/wjnm.WJNM_3_17

PMID: 29398969

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We present a 46-year-old female with pleuritic chest pain on a background of pulmonary embolism diagnosed on a single-photon emission computed tomography (SPECT) ventilation-perfusion (V/Q) imaging 3 years earlier. A SPECT V/Q scan detected a mismatched perfusion defect in the posterior basal segment of the right lower lobe, essentially unchanged from a defect identified 3 years earlier. Given the atypical finding, the patient went on to have a computed tomographic pulmonary angiogram. It revealed an intralobar bronchopulmonary sequestration as the cause of the right lower lobe mismatched perfusion defect. With growing awareness of radiation safety, the number of V/Q imaging studies being undertaken to investigate suspected pulmonary emboli, especially in young female patients, has increased. This case report serves as a timely reminder of the potential pitfalls associated with V/Q scan image interpretation.


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