Diffuse large B-cell lymphoma often presents with extranodal manifestations involving the musculoskeletal system. Shoulder pain is particularly worrisome for malignancy. Individuals presenting with refractory upper extremity complaints should undergo a prompt and thorough evaluation for cancer, as a delay in diagnosis can result in an unfavorable outcome.
Keywords: cancer; diffuse large B‐cell lymphoma; lymphoma; rotator cuff.
© 2019 The Authors. Clinical Case Reports published by John Wiley & Sons Ltd.