Background: Schwannoma is a rare, slow-growing nerve sheath tumor that is infrequently reported in the anterior chest wall and requires thorough evaluation for accurate identification and appropriate treatment.
Case Report: We describe a case of a 57-year-old woman with an incidentally discovered parasternal ancient schwannoma of the anterior chest wall during breast cancer screening. Contrast-enhanced computed tomography (CT) revealed a well-defined soft tissue mass located in the right third intercostal space. Surgical excision was performed via right anterior thoracotomy. Histopathological examination confirmed the diagnosis of ancient schwannoma. The patient experienced an eventful postoperative recovery, with no recurrence observed during two years of follow-up.
Conclusion: Anterior chest wall schwannomas are rare incidental findings. Accurate imaging and complete surgical excision are essential for diagnosis and management, ensuring favorable outcomes and highlighting the importance of timely recognition of these uncommon tumors.