Role of high resolution computed tomography in the evaluation of temporal bone lesions: our experience

Abstract

<p class="abstract"><strong>Background:</strong> High resolution computed tomography (HRCT) is a modification of routine computed tomography. It provides visual information of the minute structural details of the temporal bone. The present study aimed at studying the pathological processes of the temporal bone and their extent using HRCT.</p><p class="abstract"><strong>Methods:</strong> This prospective study was done by taking HRCT of the temporal bone in 50 patients who presented to us with clinical features of temporal bone diseases. Both contrast and no enhanced images were obtained by taking 2mm sections using ultra high algorithm in both coronal and axial planes. The results were then analysed statistically. </p><p class="abstract"><strong>Results:</strong> Amongst the 50 cases, infection was the most common pathology affecting the temporal bone. Neoplasms formed the second largest group of lesions with acoustic neuroma being the most common tumour.</p><p><strong>Conclusions:</strong> HRCT is a revolutionary imaging tool in evaluating the various pathologies affecting the temporal bone. It identifies the hidden areas of the temporal bone. It also lays down an anatomical roadmap for the surgeon preoperatively. </p>

Role of High-resolution computed tomography (HRCT) in the detection of temporal bone pathology with Histopathological correlation

“…Similar findings was reported byBagul, (2016) 9 who observed that temporal bone pathologies were more common in male where the gender ratio male:female was 2:1 which closely resembles with the present study.Similarl male predominance was also observed by Jyothi&Shrikrishna (2016), Shankhwar et al (2016) and Viastarakos et al (2012). 12,10,13 In HRCT findings it was observed in this present series that majority (96.9%) patients had soft tissue lesion, followed by 29.2.8% opacified mastoid, 27.7% ossicular and scutum erosion, 4.6% Erosion of tympanic wall, 10.8% erosion of tegmen tympani, 4.6% erosion of vestibule and facial canal and 3.1% erosion of sigmoid sinus plate and 3.1% erosion of lateral semicircular canal. Findings were comparable to the study conducted byBagul (2016)9 which showed thecommon HRCT findings in the cholesteatoma was soft tissue lesion in 100% followed by ossicular and scutum erosion 95%, erosion of tympanic wall 90%, opacified mastoid 57%, erosion of sigmoid plate 42%, erosion of lateral semicircular canal wall and tegmentympanii 19% and erosion of vestibule and fascial canal 9.5%.Cholesteatoma may be associated with extratemporal and intracranial complications, and almost all the complications are usually secondary to bone destruction and infected cholesteatoma, observed by study of Mafee et al 1988).…”