Osteosarcoma of the proximal femur masquerading as infective osteomyelitis

Abstract

Abstract Osteosarcoma is the most prevalent primary malignancy of bone in pediatric and adolescent patients. Infections, benign bone tumors, and various cancers are included while considering the differential diagnosis of osteosarcoma. Particularly among these alternate diagnoses, septic arthritis, and osteomyelitis can exhibit symptoms that are strikingly similar to those of osteosarcoma. To facilitate prompt evaluation and treatment, we describe a case of proximal femoral osteosarcoma that originally had characteristics of both septic arthritis and infectious osteomyelitis. We also go through the various distinctions between these two conditions.