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Thorax doi:10.1136/thoraxjnl-2012-203024
  • Chest clinic
  • Images in thorax

Dendriform pulmonary ossification: unusual cause of spontaneous pneumothorax

Open Access
  1. Takashi Kondo4
  1. 1Department of Thoracic Surgery, Iwate Prefectural Central Hospital, Morioka, Japan
  2. 2Department of Pathology, Iwate Prefectural, Central Hospital, Morioka, Japan
  3. 3Department of Thoracic Surgery, Miyagi Cancer Center, Natori, Japan
  4. 4Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
  1. Correspondence to Dr Jiro Abe, Department of Thoracic Surgery, Miyagi Cancer Center, 47-1 Nodayama, Medishima-Shiote, Natori, Miyagi 981-1239, Japan; jabe{at}kmph.mfnet.ne.jp
  • Received 19 November 2012
  • Revised 23 January 2013
  • Accepted 28 January 2013
  • Published Online First 15 February 2013

A 53-year-old man was admitted to our hospital with a recurrence of spontaneous pneumothorax. He had no history of other diseases including chronic lung diseases. A month prior to this admission, he had a first pneumothorax and was treated with 4 days of intercostal drainage. CT scan showed no bulla, but revealed multiple small polygonal lesions consistent with fibrotic lesions mainly in the right lower lobe (figure 1). We performed right thoracotomy and found that air leakage arose from torn visceral pleura which had been pierced by a drumstick-shaped bony structure (figure 2A). Some other solid flat lesions were palpable in the …

Open Access

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