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Abnormal blood supply to a normal lung: left circumflex artery branch supplying the right lung
  1. Yamasandi Siddegowda Shrimanth1,
  2. Mandava Satya Sahitya1,
  3. Muniraju Maralakunte2 and
  4. Bhupendra Kumar Sihag1
  1. 1Cardiology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
  2. 2Radiodiagnosis and Imaging, Post Graduate Institute of Medical Education and Research, Chandigarh, India
  1. Correspondence to Dr Bhupendra Kumar Sihag; drbhupendrasihag{at}


A middle-aged woman with hypertension presented with atypical chest pain of 1 month duration and had a positive exercise stress test. She underwent diagnostic coronary angiography which demonstrated an anomalous branch arising from the proximal part of the left circumflex artery supplying the right lung. She had atherosclerotic plaques in the right coronary artery and left anterior descending artery. Stress myocardial perfusion imaging did not reveal any inducible ischaemia in the left circumflex artery territory. She was started on medical therapy for coronary artery disease and is doing well on follow-up.

  • radiology (diagnostics)
  • ischaemic heart disease
  • interventional cardiology
  • clinical diagnostic tests
  • cardiothoracic surgery

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  • Contributors YSS and BKS were involved in the management of the patient, and in conceptualising the case report, preparing the manuscript and finalising it. MSS was involved in preparing the manuscript, literature review and proof-reading. MM was involved in preparing the manuscript, proof-reading and preparing the images.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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