 Hello, everyone. My name is Dr. Vishal Sankala, Junior Resident Department of Radiology at Government Medical College, Kota. My paper presentation topic is a cross-sectional study on space occupying legion of liver, aims and objective. The aim of the study is to determine the etiology of space occupying legion of liver and their clinical presentation and to evaluate the usefulness of ultrasound and computed tomography in the detection and characterization of focal liver legion. Introduction, liver is a common site for space occupying legion which can be developmental, infective or neoplastic. In most region of the world, liver abscess and secondary metastasis are more common legion compared to the primary liver masses. Hydrated cysts may be a common presentation in some endemic region. Ultrasound is proved to be the most important diagnostic and therapeutic tool in the field of liver space occupying legion. CT is considered as the important imaging due to its high sensitivity and specificity compared to ultrasound. Materials and method. The study design was cross-sectional. Duration was around 3 months and source of data was from tertiary care hospital, Government Medical College, Kota. The sample size was 40 cases. We have include the patient above 18 year of age which were either symptomatic, clinically suspected or asymptomatic, incidental finding. The patient who were not giving consent to be a part of study were excluded from the study. The first image shows large, ill-defined hypoequic legion with moving internal echo in segment 5 of right lobe of liver, suggestive of liver abscess. The second image shows multiple well-defined hypoequic legion with peripheral halo in right lobe of liver, suggestive of secondary liver metastasis. It is a diagnosed case of GB carcinoma which present with secondary liver mass. This case shows well-defined rounded heterogeneous hyperequic legion with internal vascularity in right lobe of liver. On correlation with triple phase contrast CT, it is suggestive of epitocellular carcinoma. The first image shows well-defined fluid density legion with internal septation and few focal area of calcification in right lobe of liver, suggestive of hydrated cyst. The second and third image shows multi-loculated ill-defined hypodensistic legion with peripheral enhancement in right lobe of liver, suggestive of liver abscess for which drainage tube inserted as seen in figure 3C. This case shows multiple small well-defined hypodensic legion which shows slight peripheral hyperattentivation on arterial phase 4B and slow washout on delayed phase 4C. In a patient which is known case of GB carcinoma, these legions are suggestive of secondary liver metastasis. The figure 4D shows well-defined hypodensistic legion in sixth segment of right lobe of liver, suggestive of simple liver cyst. This case shows multiple ill-defined heterogeneous hypodens mass legion in left lobe of liver which shows hyper enhancement on arterial phase. Portal phase show early washout and portal vein thrombosis, above finding suggestive of epitocellular carcinoma. The demographic observation was, around 57% male was included in the study while the female proportion was around 42%. Around 60% patient was having an age group of 18 to 50 years while 40% patient was more than 50 years of age. For 62% of patient we have used CT as the imaging modality. For 25% of patient we have used ultrasound as the imaging modality and the rest 12%, we have used the combination of CT and USG for diagnosing these patients. The results were as follows. The liver abscess was around 32%. The secondary metastasis was around 27%. Lever hydrated cyst was around 17%. Simple liver cyst was around 10%. Benign liver space occupying legion was around 7.5% and primary hypotocellular carcinoma was around 5%. In this present study, liver abscess was the most common space occupying legion followed by the liver metastasis because we work in a treasury care facility where majority of the patient were being referred from the surgical OPT. So, the main age of presentation of liver abscess and hydrated cyst was around 45 years. Liver abscess were more common in male population while benign space occupying legion like adenoma and hemangioma were more common in female population with a ratio of 1 to 1.6. Majority of the patient with metastasis present at the age group of 65 years. In case of secondary liver metastasis, GB mass was the most common primary followed by lung mass. Secondary liver metastasis show equal predominance in both gender. Male to female ratio is 1. So, whenever we found lung mass or GB mass, triple phase contrast CTs advice in every case to rule out the secondary liver metastasis. In our present study, hypotocellular carcinoma has a prevalence of around 5%. We have diagnosed two cases of hypotocellular carcinoma out of 40 and both of the cases were having total ven thrombus along with the mass. So, the discussion is definitive diagnosis of space occupying legion of liver is done by ultrasound and CT. CT is considered to be the preferred modality due to its high sensitivity and specificity. Liver biopsy is gold standard for diagnosis of neoplastic legion, but it is unnecessary if adequate lab and imaging data is available. The triple phase CT is a standardized procedure to characterize the vast majority of focal liver legion. In case of liver abscess, if large, then ultrasound may be used as therapeutic tool and guided aspiration should be done for early volume reduction and lesser hospital stay. Ultrasound is less sensitive and specific compared to CT scan for detecting and specifying liver space occupying legion. Thus, ultrasound should be used only as a screening tool for liver space occupying legion. These were my references. Thank you.