Clinical Report: Adult Male with Inflammatory Myofibroblastoma in the Right Forearm

Overview

This report details a rare case of inflammatory myofibroblastoma (IMT) in a 69-year-old Chinese male, highlighting its unusual location in the right forearm. The case underscores the importance of considering IMT in differential diagnoses for limb masses detected via imaging.

Background

Inflammatory myofibroblastic tumors (IMTs), previously known as inflammatory pseudotumors, are rare neoplasms that can exhibit malignant potential, often presenting in various locations, primarily the lungs. Their occurrence in the limbs is uncommon, making this case significant for clinical awareness. Accurate diagnosis relies on imaging and immunohistochemical analysis, emphasizing the need for thorough evaluation of soft tissue masses.

Data Highlights

Key Findings

• A 69-year-old Chinese male presented with a mass in the right forearm diagnosed as inflammatory myofibroblastoma.
• Imaging revealed a hypoechoic mass with abundant blood flow signals and well-defined borders.
• Postoperative pathology confirmed the diagnosis with no invasion of surrounding structures.
• ALK protein expression serves as a key immunological marker for IMT.
• Complete surgical resection is the primary treatment for localized IMT.

Clinical Implications

Clinicians should consider inflammatory myofibroblastoma in the differential diagnosis of soft tissue masses in the limbs, especially given its potential for malignancy. Early identification and surgical intervention are crucial for optimal outcomes.

Conclusion

This case highlights the rarity of inflammatory myofibroblastoma in the forearm and reinforces the need for careful evaluation of limb masses detected through imaging, including thorough immunohistochemical analysis.

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