Reverse Total Shoulder Arthroplasty for a Rare Pathological Fracture of the Proximal Humerus Caused by Marginal Zone Lymphoma: A Case Report

Key Points

• To describe a rare case of a proximal humerus fracture due to marginal zone lymphoma and its management.
• Case report of a patient with a pathological fracture due to marginal zone lymphoma.
• Patient underwent reverse total shoulder arthroplasty followed by systemic therapy.
• 15-month follow-up to assess functional recovery.
• Excellent functional recovery at 15-month follow-up, with no recurrence of the fracture.
• Identification of low-energy fractures without trauma history as indicators of underlying pathology.