Extraskeletal subcutaneous osteosarcoma of the upper arm: A case report

Area of Science:

• Oncology
• Pathology
• Radiology

Background:

• Extraskeletal osteosarcoma (ESOS) is a rare malignancy, accounting for 1% of soft tissue sarcomas.
• Subcutaneous osteosarcoma, a subtype of ESOS, is exceptionally rare, representing less than 10% of ESOS cases.
• Accurate diagnosis and understanding of rare soft tissue tumors are crucial for effective patient management.

Purpose of the Study:

• To present a case of subcutaneous extraskeletal osteosarcoma in the upper arm.
• To document the clinicopathological findings of this rare soft tissue tumor.
• To review and discuss the clinical features of previously reported extraskeletal subcutaneous osteosarcoma cases.

Main Methods:

• Case presentation of a 79-year-old male with an upper arm tumor.
• Utilized imaging studies (e.g., MRI, CT) for initial assessment.
• Performed histopathological examination for definitive diagnosis.
• Conducted a literature review of similar cases.

Main Results:

• Diagnosis of subcutaneous osteosarcoma was confirmed through imaging and pathological analysis.
• The tumor presented as a soft tissue mass in the upper arm.
• Detailed clinicopathological findings were documented for this specific case.

Conclusions:

• Subcutaneous extraskeletal osteosarcoma is a rare entity requiring careful diagnostic evaluation.
• This case contributes to the understanding of the clinicopathological spectrum of ESOS.
• Further case reports and reviews are valuable for elucidating the characteristics of rare soft tissue sarcomas.