Spontaneous rupture of the branches of left subclavian artery: A case report and review of the literatures.

Rationale: Spontaneous rupture of the branches of left subclavian artery (LSA) without any obvious risk factors is rare.

Patient Concerns: A 51-year-old female patient without history of trauma and hypertension complained about left chest pain.

Diagnoses: A chest Computed tomography (CT) scan revealed a large pleural effusion (PE) in the left thorax cavity and hemothorax was confirmed by thoracentesis.

Interventions: The patient underwent surgery.

Outcomes: spontaneous rupture of the branches of LSAwas confirmed.

Lessons: The patient recovered well and discharged after timely treatments. The unusual possibility should be paid attention in mind in acute chest pain cases.