Case Overview

Surgeons frequently manage Adolescent Idiopathic Scoliosis (AIS) using posterior spinal fusion and thoracic pedicle screw fixation. While most vascular complications appear in the acute postoperative phase, a delayed hemothorax spinal fusion event can manifest many years after the initial surgery. This rare phenomenon often relates to the chronic proximity of spinal hardware to major thoracic vessels.

In a recent clinical report, an 18-year-old female sought medical care five years after undergoing a T4-L3 posterior thoracic fusion for AIS. She specifically presented with sudden-onset chest pain and dyspnea. Consequently, medical staff performed Computed Tomography Angiography (CTA), which revealed a large left-sided pleural effusion. Subsequent thoracentesis confirmed the diagnosis of hemothorax. Notably, the patient had been asymptomatic throughout the preceding five years.

The Role of CTA in Delayed Hemothorax Spinal Fusion Diagnosis

Detailed imaging review demonstrated that the tip of the left T6 pedicle screw was directly contacting the posterior wall of the descending thoracic aorta. Furthermore, a multidisciplinary surgical team performed a diagnostic thoracoscopic evaluation. This procedure identified localized inflammatory changes and pleural irritation but showed no active extravasation at that moment. However, the potential for a catastrophic aortic rupture necessitated immediate surgical planning.

Therefore, the team proceeded with elective hardware removal under highly controlled conditions. They safely removed the left T4-L3 instrumentation, including the hazardous T6 screw that threatened the aortic wall. The patient achieved a full recovery following the hardware revision. This case emphasizes that clinicians should maintain long-term surveillance for patients who develop new thoracic symptoms years after spinal instrumentation.

Frequently Asked Questions

How can a pedicle screw cause delayed aortic injury?

A misplaced or excessively long pedicle screw can cause chronic mechanical friction against the aortic wall. Over several years, the repetitive movement of the vessel during cardiac and respiratory cycles may lead to wall erosion or pseudoaneurysm formation, resulting in a delayed hemothorax spinal fusion complication.

What is the recommended management for aortic impingement?

When imaging confirms that a screw is impinging on the aorta, a multidisciplinary approach involving spine surgeons and vascular specialists is vital. Management typically involves the safe removal of the offending hardware. In some high-risk cases, surgeons may also consider endovascular stenting (TEVAR) to protect the aortic wall before hardware extraction.

Disclaimer: This content is for informational and educational purposes only. It does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.

References

1. Alexeev P et al. Delayed hemothorax in adolescent idiopathic scoliosis 5-year post-spinal fusion. Spine Deform. 2026 Mar 22. doi: 10.1007/s43390-026-01338-6. PMID: 41865359.
2. Yammine H, Ballast JK, Boyes C, Arko FR. TEVAR for Treatment of Metallic Pedicle Screw Penetrating the Thoracic Aorta. J Cardiol Clin Res. 2018; 6(2): 1132.
3. Grazina R, Andrade R, Marinhas J, Santos F, Costa A. Massive Hemothorax after Posterior Correction Surgery of Adolescent Idiopathic Scoliosis: A Case Report. MOJ Orthop Rheumatol. 2016; 5(6): 00201.