Histiocitoma fibroso angiomatoide. Presentación de un caso y revisión de la literatura

Angiomatoid fibrous histiocytoma is a mesenchymal neoplasm of intermediate grade malignancy which is most commonly found in the extremities of children and young adults. Its histogenesis is uncertain and its morphology is unusual as it is a circumscribed lesion with spindle cells, peripheral lymphoplasmacytic infiltrate, blood-filled cystic cavities and frequent desmin expression. We report a new case and review the literature, paying special attention to genetic developments, differentiation, morphology, immunohistochemistry and differential diagnosis.