A Case of Spontaneous Hemothorax with a Ruptured Variceal Phrenic Vein.

Spontaneous hemothorax is rare, with limited data available on its etiology and treatment. We report a case of massive spontaneous hemothorax with a ruptured variceal phrenic vein during pregnancy, likely a complication of the Kasai procedure. Despite closed thoracostomy, the patient's symptoms and imaging findings did not improve. Emergent open thoracotomy and bleeding control were performed.