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CC BY-NC-ND 4.0 · Indian J Radiol Imaging 2013; 23(03): 212-218
DOI: 10.4103/0971-3026.120267
Head and Neck Radiology

Imaging features of rhinosporidiosis on contrast CT

Shailesh M Prabhu
Department of Radiology, Christian Medical College, Vellore, Tamil Nadu, India
,
Aparna Irodi
Department of Radiology, Christian Medical College, Vellore, Tamil Nadu, India
,
Hannah L Khiangte
Department of Radiology, Christian Medical College, Vellore, Tamil Nadu, India
,
V Rupa
Department of Oto-Rhino-Laryngology, Christian Medical College, Vellore, Tamil Nadu, India
,
P Naina
Department of Oto-Rhino-Laryngology, Christian Medical College, Vellore, Tamil Nadu, India
› Author Affiliations Financial support and sponsorship Nil.
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Abstract

Context: Rhinosporidiosis is a chronic granulomatous disease endemic in certain regions of India. Computed tomography (CT) imaging appearances of rhinosporidiosis have not been previously described in the literature. Aims: To study imaging features in rhinosporidiosis with contrast-enhanced CT and elucidate its role in the evaluation of this disease. Materials and Methods: Sixteen patients with pathologically proven rhinosporidiosis were included in the study. Contrast-enhanced CT images were analyzed retrospectively and imaging findings were correlated with surgical and histopathologic findings. Results: A total of 29 lesions were found and evaluated. On contrast-enhanced CT, rhinosporidiosis was seen as moderately enhancing lobulated or irregular soft tissue mass lesions in the nasal cavity (n = 13), lesions arising in nasal cavity and extending through choana into nasopharynx (n = 5), pedunculated polypoidal lesions arising from the nasopharyngeal wall (n = 5), oropharyngeal wall (n = 2), larynx (n = 1), bronchus (n = 1), skin and subcutaneous tissue (n = 2). The inferior nasal cavity comprising nasal floor, inferior turbinate, and inferior meatus was the most common site of involvement (n = 13). Surrounding bone involvement was seen in the form of rarefaction (n = 6), partial (n = 3) or complete erosion (n = 3) of inferior turbinate, thinning of medial maxillary wall (n = 2), and septal erosion (n = 2). Nasolacrimal duct involvement was seen in four cases. Conclusions: Contrast-enhanced CT has an important role in delineating the site and extent of the disease, as well as the involvement of surrounding bone, nasolacrimal duct and tracheobronchial tree. This provides a useful roadmap prior to surgery.

Keywords

Bronchus - CT - disseminated - nasolacrimal duct - rhinosporidiosis


Publication History

Article published online:
30 July 2021

© 2013. Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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