Unusual coexistence of septic pulmonary embolism and cerebral venous sinus thrombosis in an SLE patient: a case report.

Background: Septic pulmonary embolism (SPE) is a rare but potentially life-threatening complication of systemic infection. Patients with systemic lupus erythematosus (SLE) are particularly vulnerable due to immune dysregulation, chronic inflammation, and a prothrombotic state. The concurrent occurrence of SPE, cerebral venous sinus thrombosis (CVST), and intracerebral hemorrhage (ICH) in an SLE patient is exceptionally uncommon and poses major diagnostic and therapeutic challenges. Case presentation: We report a 30-year-old woman with known SLE and lupus nephritis, receiving irregular immunosuppressive therapy and undergoing hemodialysis, who presented with fever, pleuritic chest pain, productive cough, and altered mental status. Chest computed tomography demonstrated multiple bilateral cavitating pulmonary nodules and pleural-based wedge-shaped opacities, consistent with septic pulmonary embolism. Blood cultures grew methicillin-susceptible Discussion: This case highlights the complex interaction between infection, autoimmune-mediated vascular injury, and hypercoagulability in SLE, resulting in simultaneous pulmonary and cerebral thrombo-infectious complications. Conclusion: The coexistence of SPE, CVST, and ICH in SLE represents a rare but life-threatening scenario. Early recognition, prompt multimodal imaging, and coordinated multidisciplinary management are crucial for improving outcomes in high-risk patients.