 Good evening, I'm Dr. Vishnu Harika, second year post-graduate from the Department of Radiative Diagnosis, Shantiram Medical College, Nadhyal. Today, my paper presentation topic is competitive tomographic evaluation of media student masses. Coming to introduction, media student masses represent wide diversity of busy state. The clinical spectrum of media student masses can range from asymptomatic to producing compressive symptoms. Media student masses span a wide histopathological and radiological spectrum. Location and composition of a mass is critical in narrowing the differential diagnosis. Competent tomography is the most important tool in the evaluation of media student masses in determining the exact location as well as its relationship to adjacent structures. Characterization on CT is based on specific attenuation of soft tissue, fat, water and calcium. High-resolution multiplier deformation images display the detailed anatomic relationship of the tumor with adjacent structures, aims and objectives to study the distribution of media student masses, to study the computed tomographic evaluation of the media student masses, to study the involvement of neighboring structures and associated findings in media student masses, to compare the CT findings with pathologic findings wherever possible. Materials and methods. Source of data is the patients from Shantiram Medical College, Nadhyal. Method of collection of data. All patients referred from the departments of medicine, surgery, pediatrics and chest disease to the department of radiodiagnosis with the clinical suspicion of media student mass or who had an abnormal chest radiograph, celestial of media student mass. Sample size includes 50 patients. Study period is over a period of 10 months from January 2021 to October 2021. Type of study is prospect of study design, inclusion criteria. CT study of media student is conducted in clinically suspected cases of media student mass or lesion. Patients where the chest radiograph showed the media student mass, exclusion criteria or the cardiac cases and traumatic cases. Coming to results and analysis, in the present study where 50 patients were studied, media student masses were more common in men who presented more commonly in 5th to 6th decade of life. Females more commonly presented in 3rd to 4th decade of life. This is the table showing the age distribution of media student masses where we can see in the 21 to 40 years age group majority of the cases have been occurred followed by the age group of 41 to 60 years. Table 2 shows the clinical presentation of media student masses where we can see the cough is the major presenting complaint seen in approximately 70% of the cases. This is the table showing the localization of media student masses where we can see the occurrence of lesions more commonly in the anterior media student followed by posterior media student and intermediate media student. This is the table showing plain study attenuation of media student masses where we can see soft tissue attenuation in 34 cases, cystic attenuation in 23 cases, calcifications are seen in 22 cases, fat is seen in 2 cases. This is the table showing contrast enhancement pattern of the media student masses homogeneous enhancement is seen in 11 cases, heterogeneous enhancement is seen in 22 cases, beam enhancement is seen in 7 cases, intense enhancement is seen in 10 cases. This is the table showing the associated findings of media student masses where the involvement of adjacent structures is seen in 24 cases, lump findings are noted in 32 cases, bone involvement is seen in 7 cases. These are the images in a 62 years old male with cough and breathlessness showing capacitation of left of hemitorats on the radiograph. Contrast in axial and coronal reformatted images showing intensely enhancing large iotic aneurysm with non-enhancing thrombus within. Aneurysm is compressing the left main bronchus resulting in collapse of the left lung. Moderate left pleural effusion is also noted. This sastral reformatted image on window shows erosion of the vertebral body by the wrong standing aneurysm. These are the images in a 44 year old patient with cough and breathlessness showing soft tissue density mass with speckles of calcification in the anterior media stenum. Heterogeneous enhancement of the mass is noted on contrast study. CT guided biopsy of mass proved to be invasive thymoma on histopathology. These are the images in a 36 year old female showing round homogenous opacity in the left hemitorats. We can see the glunting of left claustrophrenic angle. Axial MD CT and contrast enhanced images show heterogeneously enhancing mass in the posterior media stenum. And we can see the left pleural effusion. On histopathology it is proved to be squanoma. Discussion. Media student masses represent a wide diversity of disease state. Clinical spectrum of media student masses can range from being asymptomatic to producing compressive symptoms. Location and composition of mass is critical in narrowing differential diagnosis. Although many of these masses have similar imaging appearances, clinical history and optical portion and certain details seen at imaging allocurric diagnosis in many cases. All the chest radiography is used in the initial detection of media student mass. Their further evaluation leads CT. The present study media student masses were more commonly encountered between the third to sixth decade of life with main preponderance. Conclusion. CT plays an important role in evaluation of media student masses in terms of their distribution. Their further characterization and distribution, P9 and marignite lesions. CT gives clear delineation of lesions and distinguishes them better from normal structures. To conclude CT is the imaging modality of choice in evaluating media student mass. For their exact localization, studying the morphological features and writing the provisional diagnosis for optimal patient management. These are the provisional list of references. Thank you.