Benign fibroblastic tumor-like lesion simulating malignancy in the maxilla

Area of Science:

• Oral pathology
• Surgical pathology
• Pediatric oncology

Background:

• Fibroblastic lesions can sometimes mimic malignant tumors.
• Accurate diagnosis is crucial for appropriate treatment and patient outcomes.

Observation:

• An 11-year-old girl presented with a lesion in the right maxilla that perforated the outer cortical plate, raising suspicion for malignancy.
• Histopathological examination revealed a proliferation of fibroblasts and fibrocytes within a myxoid matrix, lacking significant atypia or mitotic activity.

Findings:

• Electron microscopy confirmed the presence of myofibroblasts among the fibroblastic cells.
• The lesion did not fit any previously defined pathological entities, leading to a diagnosis of a benign fibroblastic lesion.

Implications:

• This case highlights the importance of thorough histopathological evaluation to differentiate benign from malignant fibroblastic lesions.
• Conservative surgical management was successful, with no recurrence observed at 18 months post-surgery.
• Further research may be needed to classify and understand such rare fibroblastic lesions.