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Pulmonary venous anomalies causing misdiagnosis of pulmonary arteriovenous malformations

Published:September 08, 2017DOI:https://doi.org/10.1016/j.clinimag.2017.09.003

      Highlights

      • Pulmonary venous anomalies are vascular mimics of pulmonary arteriovenous malformations that may lead to misdiagnosis.
      • Anomalous unilateral single pulmonary vein and meandering vein have clinical and imaging characteristics different from.
      • Optimal CT technique and careful review of CT scans are necessary to minimize inappropriate invasive pulmonary angiography.

      Abstract

      Purpose

      To investigate pulmonary venous anomaly as a cause of pulmonary arteriovenous malformation (PAVM) misdiagnosis.

      Materials and methods

      We reviewed adult patients within a 7.5-year period with CT scans initially diagnosed with PAVM and subsequent conventional pulmonary angiograms.

      Results

      Pulmonary arteriography showed no PAVM on arterial phase for 10 out of 99 patients, comprising the misdiagnosed group. Four misdiagnosed patients had pulmonary venous anomalies and six had nodular lesions on CT.

      Conclusion

      Pulmonary venous anomalies are vascular mimics of PAVMs that may lead to misdiagnosis. Optimal CT technique and careful imaging review are necessary to minimize inappropriate invasive angiography.

      Keywords

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