title: Imaging in Rare and Atypical Sinonasal Masses: An Interesting Case Series.
abstract: Sinonasal tumours present a myriad of radiographic findings. While many of these tumours have been well described with regard to their typical sites of origin, age group and radiological appearance we have come across lesions in our daily practice which are exceedingly rare with regard to site of origin in sinonasal cavity. The radiological appearances of 4 such rare and unusual tumours arising in sinonasal region evaluated by cross sectional imaging (CT/MRI) have been illustrated in this article with a purpose to review the radio-pathological correlation of these tumours and to explain the utility of cross-sectional imaging CT and MRI in exploring diagnostic clues. Morphological features and radiological patterns of each tumour have been graded into mild, moderate and severe based on the extent of tumoural involvement. This review is intended to acquaint radiologists with the appearance of atypical sinonasal masses and their radiological appearance on cross sectional imaging to make an early diagnosis.
authors.affiliation: Senior Resident, Department of Radiology, Dr Ram Manohar Lohia & Postgraduate Institute of Medical Education & Research , New Delhi, India .
authors.forename: Shantiranjan
authors.initials: S
authors.lastname: Sanyal
authors.affiliation: Associate Professor, Department of Radiology Radio-diagnosis, PGIMER, RML Hospital , New Delhi, India .
authors.forename: Akhila
authors.initials: A
authors.lastname: Prasad
authors.affiliation: Assistant Professor, Department of Radiology Radio-diagnosis, Assam Medical College , Dibrugarh, Assam, India .
authors.forename: Deb Kumar
authors.initials: DK
authors.lastname: Baruah
authors.affiliation: Head of the Department, Department of Radiology, PGIMER, RML Hospital , New Delhi, India .
authors.forename: Umesh Chandra
authors.initials: UC
authors.lastname: Garga
keywords: Cross sectional imaging; Differential diagnoses
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