This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Coombs positive hemolytic anemia associated with: \nSelect and explain. \nA. TTP, B. PAN, C. SLE, D. HUS', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (SLE) Coombs positive hemolytic anemia is a feature of autoimmune hemolytic anemia and is characteristically seen in SLE. Polvaeritis Nodosa (PAN) may also be associated with a Coombs positive hemolytic anemia. However this association is rare, and more commonly patients with PAN present either with an anemia of chronic disease or a microangiopathic hemolytic anemia. TTP and HUS are characteristically associated with Coombs negative microangiopathic hemolytic anemias.', 'role': 'assistant'}]