Nasoethmoidal condromesenchymal hamartoma with intracranial extension: a case report

Abstract

The Chondromesenchymal Nasal Hamartoma (CMNH) is a rare neoplasm described in 1998 by McDermott et al in the pediatric age, with few cases reported in adults. This tumor is composed by chondroid or cartilaginous tissue as well as mesenchymal tissues. It is an expansive lesion, locally destructive and in some cases intracranial extension is described. Its behavior is usually benign and its treatment consists of surgical resection. The authors present an 8-month-old male patient with increase volume in the right periorbital region, palpebral ptosis, paresis of the right oculomotor nerve and hyaline rhinorrhea. Computed Tomography (CT) and Cerebral Magnetic Resonance Imaging (MRI) were perfomed and revealed a nasofrontoethmoidal space occupying lesion; a histopathological and inmunohistochemical study resulted in osseous fibrocartilaginous mesenchymal tumor: chondromesenchymal hamartoma. We review the characteristics and treatment of this rare tumor.