[Osseous desmoid fibroma (2 case reports)].

Area of Science:

• Orthopedic Oncology
• Skeletal Tumors
• Fibroblastic Tumors

Background:

• Bone dermoid fibroma, first described by Jaffe in 1958, is a rare, benign fibroblastic tumor.
• These tumors exhibit significant local expansion and a high rate of recurrence, though they do not metastasize.
• Approximately 38 cases have been documented in medical literature prior to this report.

Observation:

• This study presents two novel cases of bone dermoid fibroma, marking the first reported instances in Romanian medical literature.
• Case 1 involved a tumor in the superior tibioperoneal metaphysis, which recurred three times over two years, ultimately necessitating amputation.
• Case 2 featured a tumor in the inferior femoral metaphysis, treated with Juvara-Merle d'Aubigne type resection-arthrodesis and is currently under observation.

Findings:

• The cases underscore the aggressive local behavior and potential for recurrence of bone dermoid fibromas, even after multiple surgical interventions.
• The distinct anatomical locations (tibioperoneal and femoral metaphysis) provide further insight into the tumor's presentation.
• Successful management varied, with amputation required for a highly recurrent case and limb-sparing surgery for another.

Implications:

• These findings emphasize the need for vigilant follow-up and potentially aggressive surgical strategies for bone dermoid fibromas to prevent local recurrence.
• The report contributes valuable data to the limited literature on this rare bone tumor, particularly from a regional medical context.
• Further research may explore optimal treatment protocols and prognostic factors for bone dermoid fibromas to improve patient outcomes.