COMPARISON OF SONOGRAPHY AND COMPUTED TOMOGRAPHY IN ANALYSIS OF ORBITAL SPACEOCCUPYING LESIONS
Journal Title: Journal of Evolution of Medical and Dental Sciences - Year 2017, Vol 6, Issue 74
Abstract
BACKGROUND Orbital space-occupying lesions presenting mainly with proptosis is one of the interesting conditions in Ophthalmology and poses a challenge for diagnosis and management. This study was undertaken to compare the contributions of the two vital techniques, Computed Tomography and Ultrasound in characterisation of the offending condition. The merits of each method was demonstrated relative to defining the location, extension, and nature of the lesion. MATERIALS AND METHODS Eighty patients with a strong clinical suspicion of intraorbital space-occupying lesions were included in this descriptive study. USG was first done when the suspicion was strongly in favour of intraocular lesions due to clinical presentation (Leucocoria) or ophthalmoscopic findings. Other cases were subjected to CT initially and then correlated with ultrasound. Final diagnosis was made in correlation with HPE/therapeutic trial, etc. RESULTS Eighty Patients in the age group of 21 days to 60 years were included in the study. The results were analysed under two categories – the space occupying lesions of the eyeball and intraorbital extraocular space occupying lesions. Only 10 patients were included in the first group. Children formed the majority and retinoblastoma was the commonest presentation. Good sensitivity was noted with both modalities regarding ocular and orbital extension of Retinoblastoma (100%). The second group namely orbital lesions included optic Nerve lesions, vascular masses, pseudotumour and muscular lesions. Primary paranasal masses and bony orbital lesions presenting with proptosis were also included in the study. Sonography was found to be excellent for the diagnosis of optic nerve lesions and vascular masses but it had to be supplemented with CT to delineate the extent of the mass for the rest of lesions. CONCLUSION Sonography is found to be a sensitive modality for intraocular lesions, but CT proved its supremacy in characterisation of extraocular lesions, including bony lesions, paraorbital lesions and cystic masses.
Authors and Affiliations
Sumathy Soundararajan, Ravichandran Sathianarayanan, Rammurugan N
Keywords
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- EP ID EP265879
- DOI 10.14260/Jemds/2017/1152
- Views 88
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