Spontaneous hemothorax in Neurofibromatosis type 1 with a giant intrathoracic meningocele and intracystic hematoma: Diagnostic value of postmortem CT.

Yohei Ikebe, Taisuke Harada, Zen-Ichi Tanei, Nanase Okazaki, Toshiya Osanai, Shinya Tanaka, Kohsuke Kudo

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In one paragraph

Article in Radiology case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Yohei IkebeDepartment of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Hokkaido, Japan.

Taisuke HaradaDepartment of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Hokkaido, Japan.

Zen-Ichi TaneiDepartment of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.

Nanase OkazakiDepartment of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.

Toshiya OsanaiDepartment of Neurosurgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.

Shinya TanakaCenter for Cause of Death Investigation, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.

Kohsuke KudoDepartment of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Hokkaido, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We report a case of spontaneous hemothorax in a 48-year-old woman with Neurofibromatosis type 1 (NF1), presumed to result from rupture of an intrathoracic meningocele. She had been hospitalized for treatment of an intracranial carotid artery aneurysm and underwent endovascular embolization. Preoperative body CT demonstrated a meningocele protruding into the left thoracic cavity at the level of the T3/T4 vertebrae. On postoperative day 6, she experienced sudden cardiopulmonary arrest and died. Postmortem CT revealed a massive left hemothorax and an acute high-density hematoma within the intrathoracic meningocele. Autopsy findings were consistent with hemothorax likely caused by rupture of the meningocele. NF1 is associated with intrathoracic meningoceles and vascular fragility. The acute hematoma seen within the meningocele on postmortem CT suggested meningocele rupture as the source of bleeding, illustrating a rare but characteristic complication of NF1.

Indexed as

HemothoraxIntra-meningocele hemorrhageIntrathoracic meningoceleNeurofibromatosis type 1Postmortem CT

Identifiers

PMID42111423

DOI10.1016/j.radcr.2026.03.039

PMCPMC13156555

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