Xanthogranulomatous osteomyelitis

Area of Science:

• Pathology
• Immunology
• Radiology

Background:

• Xanthogranulomatous osteomyelitis is a rare inflammatory condition characterized by immune cell aggregation.
• Its pathogenesis may involve delayed-type hypersensitivity reactions.
• Radiological findings can resemble malignancy, necessitating histopathological confirmation.

Observation:

• A 14-year-old boy presented with shoulder and leg pain post-trauma.
• Clinical examination revealed fever, limited shoulder motion, and tenderness.
• Laboratory tests showed mild leukocytosis, elevated alkaline phosphatase, and ESR, with negative CRP.

Findings:

• Radiography demonstrated mixed density, periosteal reaction, and cortical disruption.
• CT scans revealed bone lesions with soft tissue components and marrow infiltration in the humerus and fibula.
• MRI showed signal abnormalities and soft tissue involvement in the affected bones.

Implications:

• Histopathological analysis confirmed xanthogranulomatous osteomyelitis.
• This case highlights the importance of integrating clinical, radiographic, and laboratory findings for diagnosing this rare entity.
• Understanding the presentation of xanthogranulomatous osteomyelitis aids in differential diagnosis and appropriate management.