title: Esthesioneuroblastoma as a collision tumor.
abstract: Esthesioneuroblastoma is an uncommon malignant neoplasm of nose and paranasal sinuses. Esthesioneuroblaslvma presenting as a collision tumour is very rare. The case of such a rare presentation is being reported here in a patient with previous history of squamous cell carcinoma uvula, post irridiatted; who now developed a bleeding nasal mass which proved to be a collision timour c ontaining both squamous cell carcinoma and Esthesioneuroblastoma on biopsy.
authors.affiliation: Department of ENT, Medical College, HOD, Calicut.
authors.forename: K Salil
authors.initials: KS
authors.lastname: Kumar
authors.forename: P Muraleedharan
authors.initials: PM
authors.lastname: Nampoothiri
authors.forename: M
authors.initials: M
authors.lastname: Venugopal
authors.forename: P
authors.initials: P
authors.lastname: Padmanabhan
keywords: Esthesioneuroblastoma; collision tumour