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Pulmonary arteriovenous fistula in a patient with cryptogenic stroke
  1. Kye Taek Ahn1,
  2. Jin-Ho Choi1,2,
  3. Seung Woo Park1
  1. 1Department of Medicine, Cardiovascular Imaging Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
  2. 2Department of Emergency Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
  1. Correspondence to Dr Seung Woo Park, Department of Medicine, Cardiovascular Imaging Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul 135-710, Republic of Korea; s.woo.park{at}samsung.com

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A 43-year-old female patient presented with transient right-sided facial numbness and dysarthria. MRI of the brain demonstrated an ischaemic infarct of the right medial occipital lobe. Embolic cerebral infarction was suspected, and transoesophageal echocardiography with injection of agitated saline was undertaken. This revealed microbubbles entering the left atrium (figure 1A,B) from the left upper pulmonary vein. There …

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