 Hello, everyone. This is Dr. Utsav Bangwili, junior resident, Department of Radio Diagnosis, funded by B.B. Sharma, P.G. I.M.S. Lothar. The topic of my presentation is the role of magnetic resonance imaging in the evaluation of salivary gland masses. Humans have three pairs of major salivary glands, palliative, subhandable and sublingual. Neoplasms of the salivary gland will be benign or malignant. Examples of benign tumors are pleomorphic adenoma, water tumor, and oncocytoma. Benign tumors include mucoepidoma carcinoma, asinoxal carcinoma, and adenocystic carcinoma. Salivary gland swelling most commonly present at masses in the jaw or neck region. Benign masses are usually asymptomatic. Some other symptoms include pain or dysphagia. Sudden infusion in the cells, decreased pain, and vision of fallacy may indicate malignant change. Imaging plays an important role in the visualization of morphology and functions to establish a diagnosis for treatment and surgical planning. Available modalities include ultrasound, radiography, xylography, CT, MRI, scintigraphy, and PET scan. In children and pregnant women, USG is considered the first step, especially for lesion through the superficial lobe of the parotid. For further characterization of tumors, cross-sectional imaging, cross-sectional imaging, like CT or MRI, must be performed. CT is a modality of choice for patients with a clinical history and findings suggestive of inflammatory conditions, like parotiditis or salivary clasus. Similarly, recurrent subcutaneous episodes of mildly painful or tender parotid or submandibular swelling are best assessed on a CT. MRI is the preferred modality for the evaluation of salivary gland tumors because it gives us a better soft tissue resolution and an assessment of extra glandular and perineural spread. Also, it does not employ any ionizing radiation. The aim and objectives of our study was to evaluate the role of MRI in salivary gland masses and to compare the MRI findings with the final diagnosis achieved on clinical follow-up, histopathological examination, or operative findings. It was a cross-sectional study to the sample size of 30 patients, ethical clearance was taken. The inclusion criteria included patients of any age or sex presenting with the salivary gland mass region. Patients with a salivary gland infection, salivary clasus, or with contraindications to MRI were excluded from our study. USG and MRI were done in all patients and histopathological examination using echinacy was done for the final diagnosis. Sonographic and MRI findings are compared to clinical follow-up, operative or histopathological findings. Statistical analysis are done as appropriate. Now, coming to the cases. This is the case of right parotid lymphagnitis, which shows a rounded hypohydrogen or ultrasound appearing hyperintense on T1, heterogeneous, hyperintense on T2, heterogeneous on T1 with no significant contrast enhancement. Here's a case of bilateral parotid lymphagnitis with multiple regions throughout bilateral parotid glands, which are isointense on T1, hyperintense on T2 with no significant contrast enhancement. Our case of right parotid absence showed a hypohydrogenic lesion with hypogenic debris on ultrasound. It appeared hyperintense on T2, hypo on T1, with peripheral contrast enhancement. Here's the case of bilateral benign lymph for pithelium lesions, where both the parotid glands were bulky with multiple tiny lesions throughout, which appear isointense on T1, hyperintense on T2, with no significant contrast enhancement. Here's a pleomorphic adenoma of the right submandible gland. It appeared lobulated in hypohydrogen ultrasound, and on MRI it was hyperintense on T2, with heterogeneous contrast enhancement. Here's a pleomorphic adenoma of the left parotid showing oncocytic change. The lesion appeared hypohydrogen on ultrasound with hyperintense areas on T2, which indicates the oncocytic change, while the solid part showed contrast enhancement. Here's a water tumor of the left parotid with cystic change. The ultrasound showed a hypohydrogenic lesion with the anechoic component corresponding to the cystic part. The cystic component appeared hyperintense on T2, whereas the solid part showed contrast enhancement. In our study, the most common lesions in your plastic, as we can see from the pie chart, and the most common of them was pleomorphic adenoma. Among the inflammatory conditions, the most common was reactive lymphogenitis. 90% of the cases matched in the MRI findings with the histopathological diagnosis. Here's a table showing distribution of the patients according to the final diagnosis. There we see that the most common neoplastic condition was pleomorphic adenoma. The most common inflammatory condition was reactive lymphogenitis. And here is a table describing the lesion on MRI. Here's another table showing the signal characteristics of the lesion on MRI. In our study, major salivary gland diseases were divided into two groups based on the final diagnosis. Inflammatory, which is 26.66% and neoplastic, 73.30%. So the most common type of disease in our study were the benign tumors, 22. And in benign tumors, pleomorphic adenoma was the most common followed by water. In the present study, the youngest patient was 18 years, oldest was 61 years, and the main age was 39.5 years. Out of the 30 cases, 16 were male and 14 were female. So the male-female ratio was almost similar around ages to seven. However, males were seen to be affected more in the extremes of ages, whereas inflammatory strains were common in females. And as they've already said, out of the 30 cases, 27, that's 90%, were accurately diagnosed on MRI. In conclusion, MRI is a safe and reliable imaging modality of choice for most of the salivary gland diseases, and can be used for the delineation of location and regional extension, and is mostly accurate in making a histopathological diagnosis. However, the definition of diagnosis is still made by a tissue diagnosis such as FNSE or core biopsy. Here are the references for my study. Thank you for your patient listening.