Desmoplastic fibroma of bone: A morphological and immunohistochemical characterization

GABRIEL CAO; GRACIELA OTTAVIANO; ANALÍA FUSARO; JULIÁN MENDEZ; FRANCISCO CAPANI; DANIEL NAVACCHIA

Journal of Clinical Images and Medical Case Reports

Las Vegas, Nevada : Open Source Publications, [2020]

Lugar: Las Vegas; Año: 2021 vol. 2 p. 1399 - 1401

2766-7820

Background: Desmoplastic Fibroma (DF) of bone is a locally aggressive and infrequent benign neoplasm. Recently was described a role of vascular endothelial growth factor in the interstitial fibrotic processes.Case presentation: A 13-year-old female presented with pain, swelling and limitation of movements in right forearm. An osteolytic lesion at the distal end of the right radius was shown, with pathologic concentration of Technetium 99 and slight enhancement of soft tissue lesion employing computerized axial tomography. The surgical biopsy showed nodular formations of hyalinized collagen fibers arranged in thick bands with few well-differentiated interstitial fibroblasts / myofibroblasts, focally expressing VEGF-A.Conclusion: The intramedullary neoplastic proliferation is limited by the cortical bone, provoking compression of the intratumorally micro-vessels, favoring both, the extracellular matrix and VEGF-A synthesis. Future research should include therapeutic intervention with anti-CD117 and anti-VEGF-A drugs, with the aim of limiting tumor growth, facilitating the complete surgical excision of the neoplasm.