Man with Acute Abdomen

A 70-year-old man presented to the emergency department with a five-day history of diarrhea, vomiting, abdominal pain, and per rectal bleeding.Seven previously, he was diagnosed with locally advanced esophageal carcinoma without metastasis.Ten days before this presentation, he underwent his second chemotherapy cycle containing docetaxel, 5-fluorouracil, and oxaliplatin.Figures 123show coronal sections of the patient's abdominal computed tomography (CT) with intravenous contrast.Questions 1.What is this condition called? 2. What are the causes of this condition?3. What is the possible cause for the present case?clinical quiz