1. A 60-year-old man was referred to emergency department with acute abdominal pain of the lower right quadrant. He mentioned gradual weight loss during the past few months. A physical examination revealed mild tenderness and a palpable mass in the right ileac fossa.During his hospitalization, he presented with low fever (37.1°C to 37.6°C) and complained of deterioration of his abdominal pain. List out the DDs in this case. List out the key investigations. Briefly describe the treatment for the most probable diagnosis.
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