Malignant fibrous histiocytoma arising in medullary long bone infarcts. A case report

Area of Science:

• Orthopedic Oncology
• Pathology
• Bone Neoplasms

Background:

• Malignant fibrous histiocytoma (MFH) is a rare soft tissue sarcoma.
• MFH arising in bone infarcts is a recently recognized entity.
• Idiopathic medullary bone infarcts are avascular bone segments of unknown etiology.

Observation:

• A case of MFH developing in a 58-year-old male patient is presented.
• The patient had idiopathic medullary bone infarcts in the distal femurs.
• This represents the 19th reported case of MFH in bone infarcts.

Findings:

• MFH arising in bone infarcts is a distinct clinicopathologic entity.
• The literature review includes 18 previously reported cases.
• This case adds to the understanding of MFH in bone infarcts.

Implications:

• Further research is needed to elucidate the pathogenesis of MFH in bone infarcts.
• Early recognition and diagnosis are crucial for patient management.
• Understanding this rare entity aids in differential diagnosis for bone lesions.