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Thymoma mimicking an aortic aneurysm: always expect the unexpected
  1. Dario Michaux1,
  2. Lawek Berzenji1,
  3. Lotte Keulen2 and
  4. Inez Rodrigus3
  1. 1 Thoracic and Vascular Surgery, University Hospital Antwerp, Edegem, Antwerpen, Belgium
  2. 2 Pathology, University Hospital Antwerp, Edegem, Antwerpen, Belgium
  3. 3 Cardiac Surgery, University Hospital Antwerp, Edegem, Antwerpen, Belgium
  1. Correspondence to Dr Lawek Berzenji, lawek.berzenji{at}


Thymic epithelial tumours (TETs) are rare lesions that represent less than 1% of all malignancies in adults. Presentation occurs in three ways: asymptomatic, with local thoracic symptoms or with paraneoplastic symptoms. Heterotopic ossifications are rare histological features in neoplasms and non-neoplastic lesions. Here, we present a 49-year-old male patient with a thymoma type B2 mimicking an aortic aneurysm. Alongside the thymoma, a cholesterol granuloma with unusual ossification features was found as well. This clinical presentation and pathological diagnosis are unusual findings.

  • oncology
  • cardiothoracic surgery
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  • Contributors DM and LB: conceptualisation, validation, visualisation, writing and final approval. LK: visualisation, pathological image acquisition, writing, final approval. IR: conceptualisation, validation, visualisation, writing, critical revision and final approval.

  • 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.

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

  • Patient consent for publication Obtained.

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