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ACCURACY OF CONTRAST ENHANCED MULTI-DETECTOR CT IN EVALUATION OF ORAL CAVITY AND OROPHARYNGEAL LESIONS

Nida Rafiq, Saba Sohail, *Dr. Ghazala Shahzad and Dr. Aashfa Hassan

Objective:The purpose of this study was to determine the frequency of oraland to determine diagnostic accuracy of CT in diagnosing malignant conditions. Patients and Methods:117 subjects presenting with oral mass were selected over a period of 4 months. All patients underwent contrast enhanced CT Neck. These studies were reviewed by consultant radiologist and imaging results were compared with histological findings. Results:Histopathology revealed total 100 malignant and 17 benign lesions. True positive cases were 99, 14 true negatives, 3 false positives and 1 false negative. CT correctly identified malignant pathology in 99 of 100 cases and excluded malignant disease in 14 of 17 cases. Diagnostic accuracy of multidetector CT was: specificity 82.35%, sensitivity of 99%, PPV 99.05%, and NPV 93.33%. Conclusion:CT has high accuracy in diagnosing and differentiating benign and malignant lesions. Malignant pathologies were more common in elderly males - most common being buccal carcinoma. Key Words:Oral cavity, oropharyngeal lesions and CT scan

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