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Aggressive juvenile mandibular fibromatosis
Georgi P Ivanov1, Dimitar T Atanasov2, Beniamin L Anavi1
1Department of General and Clinical Pathology and Forensic Medicine
Folia Medica
|April 10, 2014
Summary
Aggressive juvenile fibromatosis is a rare jawbone tumor. Diagnosis involves immunohistochemistry, and management requires radical excision, though spontaneous regression can occur.
Area of Science:
- Oral pathology
- Oncology
- Surgical pathology
Background:
- Aggressive juvenile fibromatosis is a rare, infiltrative jawbone tumor with unpredictable behavior.
- Distinguishing it from other lesions is crucial for appropriate management.
Observation:
- A 17-year-old presented with mandibular resorption, tooth displacement, and malocclusion.
- Histopathology revealed a bundle-like structure with specific immunohistochemical markers (vimentin, smooth muscle actin, beta-catenin, Ki-67).
Findings:
- The tumor showed positive staining for beta-catenin, a key diagnostic marker for desmoid fibromatoses.
- Differential diagnoses included mandibular fibroma, fibrosarcoma, and other soft-tissue tumors.
Implications:
- Radical excision is the recommended treatment for aggressive fibromatosis.
- While local recurrences are possible, metastases are not observed, and spontaneous regression is rare.
