<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 40-year-old man presents to the office with complaints of epigastric discomfort for the past 6 months. He adds that the discomfort is not that bothersome as it does not interfere with his daily activities. He does not have any other complaints at the moment. The past medical history is insignificant. He is a non-smoker and does not consume alcohol. He recently came back from a trip to South America where he visited a relative who owned a sheep farm. On physical examination, he has a poorly palpable epigastric non-tender mass with no organomegaly. The hepatitis B and C serology are negative. The liver CT scan and MRI are shown. What is the most likely diagnosis?? A: Liver abscess, B: Tuberculosis, C: Hepatocellular carcinoma, D: Echinococcosis, E: Hemangioma,  <response>: Based on the information provided in the question stem, the key findings are:- 40-year-old man with epigastric discomfort for 6 months - Discomfort does not interfere with daily activities- Recently visited relatives sheep farm in South America- Physical exam showed poorly palpable epigastric non-tender mass- Negative hepatitis B and C serology- CT scan and MRI show cystic lesion in liverThe location of the cystic lesion in the liver along with the recent travel history to a sheep farm in South America points towards echinococcosis hydatid cyst as the most likely diagnosis. Echinococcosis is caused by the parasite Echinococcus granulosus which is found in dogs and sheep. Humans can become infected by ingesting eggs from contaminated food or water. This results in cyst formation in organs like the liver. The other options can be ruled out based on the clinical presentation and imaging findings.D: Echinococcosis 