CT and MRI with operative findings; a comparative study of otorhinolaryngology

Abstract

Aim: To confirm the accuracy of updated imaging investigations in disorders of  otorhinolaryngology and to support the commitment of the surgeon toward the proper surgical procedures of these disorders. Study design: A prospective and comparative study of updated imaging (CT scan and MRI) of otorhinolaryngological disorders in 72 patients with transversal cohort (2012-2014).

Materials and methods: Seventy-two patients attended Assalam Teaching Hospital, Cttorhinolaryngology department Mosul, Iraq, from January 2009 to November 2009. The patients were subjected to CT scan and/or MR imaging, included 32 patients with sinonasal disorders, 30 patients with laryngopharyngeal disorders, and 10 patients with otological disorders. The age distribution of the patients range from 2 months — 75 years, with a mean age of 38 years, with sex distribution of 52 males and 20 females. The objectives of this study are to evaluate the diagnostic value of CT scan and MRI in otorhinolaryngological disorders and to compare the result with the operative findings.

Result: For sinonasal tumors; in bone distraction, the accuracy of CT scan was 100 % and for MRI 66%. In intracranial extension the accuracy of CT scan was 50% and for MRI 87%. In tumor staging by CT scan, the accuracy was 75% and for MRI 87%. For bony hard lesion, the accuracy of CT scan 100% , were in 2 patients, one of them was un irrupted tooth, and the other was bilateral choanal atresia. For the larynx; Paraglottic space involvement, the accuracy of CT scan was 88% and for MRI 86%. Extra laryngeal spread the accuracy of CT scan was 75% and for MRI 71%. Cartilaginous invasion the accuracy of CT scan was 81% and for MRI 79%. For the ear; Bony erosion the accuracy of CT scan was 80% and for MRI 66%. Space occupying lesion (brain abscess) the accuracy of CT scan was 100% and for MRI 100%. Chronic mastoiditis (cholesteatoma) the accuracy of CT scan was 80% and for MRI 66%.we have concluded that, the updated imaging becomes a well-defined signs and has many fundamentals in relation to otorhinolaryngological disorders.

Conclusion: Updated imaging (CT and MRI) becomes a well-defined signs and has many fundamentals in relation to otorhinolaryngological disorders. Coronal and axial CT views are the most useful views in the nose and paranasal sinuses, also CT was superior to MRI in detecting neoplastic bone disorders especially with early bone erosion, While MRI is important to differentiate between retained secretions and neoplastic lesions (benign and malignant).