Chondroblastic Osteosarcoma of Nasal Bone: Report of a Rare Case

Abstract

Introduction

Chondroblastic osteosarcoma is a rare malignant bone tumor characterised by the presence of osteoid and cartilagineous components and its occurence in the lateral nasal wall is extremely uncommon which presented with nasal obstruction.

Case Report

A- 15- year old boy presented with a history of chronic right nasal obstruction lasting for more than 1 year. It was gradually progressive in nature. Clinical examination revealed a large sinonasal mass in the right nasal cavity which extended upto the middle meatus on Anterior Rhinoscopy. On Posterior Rhinoscopy the mass extended into the maxillary sinus . It was senseless on probing and free on medial side and . Laterally, the probe could not be moved as mass was attached.

Discussion

Chondroblastic Osteosarcoma of the lateral nasal wall and nasal bone is an extremely rare entity and only a few cases have been reported in the literature. It predominantly affects the adolescents and young adults with a slight male predominance. The clinical presentation is often non specific and includes sypmtoms such as nasal obstruction, facial swelling, epistaxis,facial swelling and pain. Radiological imaging including CT and MRI is essential for assessing tumor extent and involvement of adjacent structures. Surgical management with wide excisionis the mainstay of treatment. Adjuvant Chemotherapy and  Radiotherapy may be considered depending on the risk factors. Histopathological examination and Immunohistochemistry plays a crucial role in confirming the diagnosis.