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Bilateral mediastinal cysts with müllerian differentiation
  1. Nuria Domedel Puig1,
  2. Marta Cufí Quintana2,
  3. Vanessa Escobedo Rodriguez3,
  4. Manuela Iglesias Sentís4,
  5. Miguel Gallego5,6
  1. 1CAP Ca n'Oriac, Institut Català de la Salut, Sabadell, Barcelona, Spain
  2. 2Radiology Department, Parc Taulí Hospital Universitari, Barcelona, Spain
  3. 3Pathology Department, Parc Taulí Hospital Universitari, Barcelona, Spain
  4. 4Thoracic Surgery Department, Parc Taulí Hospital Universitari, Barcelona, Spain
  5. 5Respiratory Department, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí (I3PT-CERCA), Universitat Autònoma de Barcelona, Barcelona, Spain
  6. 6Centro de Investigación Biomédica en Red de Enfermedades Respiratorias, Carlos III Health Institute, Madrid, Spain
  1. Correspondence to Dr Nuria Domedel Puig, CAP Ca n'Oriac, Institut Català de la Salut, Barcelona, 08207, Spain;{at}

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A chest X-ray was ordered in a 40-year-old woman due to an acute cough, showing an enlarged mediastinal silhouette (figure 1A). A physical examination showed a body mass index of 26 kg/m2. She reported prior use of hormonal contraception. CT scanning led to the detection of two posterior mediastinal, paravertebral and cystic images (figure 1B): a right, 28-mm-wide cyst at T5–T6 and a left, 24-mm-wide cyst at T4–T5. On MRI (figure 1C), they appeared as two extraspinal, extrapleural, thin-walled, uniloculated cystic lesions, unrelated to the intervertebral foramen.

Figure 1

(A) Posterior anterior chest X-ray showing mediastinal enlargement with bilateral widening of paravertebral lines (arrows). (B) CT scan with contrast (coronal view) reveals two paravertebral, bilateral, low-density, well-defined lesions at T4–T5 and T5–T6. (C) T2-weighted MRI of the dorsal spine (coronal view) …

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  • Contributors All authors contributed to this work.

  • 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.