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Lemon-shaped mass in the lung: a phantom tumour
  1. Ryohei Ono,
  2. Ken Kato,
  3. Yoshio Kobayashi
  1. Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
  1. Correspondence to Dr Ryohei Ono, Department of Cardiovascular Medicine, Chiba University Graduate school of Medicine, Chiba 260-8670, Japan; ryohei_ono_0820{at}

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A 79-year-old man with chronic atrial fibrillation presented with a 3-day history of dyspnoea. These symptoms worsened during the night at rest. His vital signs were stable. Physical examination revealed jugular venous distension and peripheral oedema, and the chest auscultation revealed irregular heart sounds and bibasal crackles.

Radiography of the chest showed a well-delineated lemon-shaped mass in the right middle lung field (figure 1A). CT of the chest demonstrated bilateral plural fluid and two mass-like densities in the …

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  • Contributors OR and KK contributed to the patient care and wrote the manuscript. YK contributed to critical revision of the article and approved the final version.

  • 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.

  • Competing interests None declared.

  • Patient consent for publication Not required.

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

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