This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Pathology
Kidney biopsy from a child with hemolytic uremic syndrome characteristically most likely presents features of - 
Select and explain. 
A. Thrombotic microangiopathy, B. Proliferative glomerulonephritis, C. Focal segmental glomerulosclerosis, D. Minimal change disease
A: Thrombotic microangiopathy
Answer: A: Thrombotic microangiopathy 
Explanation: HUS(hemolytic uremic syndrome) caused by insults that lead to the excessive activation of platelets, which deposit as thrombi in microcirculatory beds. These intravascular thrombi cause microangiopathic hemolytic anemia and widespread organ dysfunction, and the attendant consumption of platelets leads to thrombocytopenia. Complications of bacillary dysentery: 1. Reiter syndrome: A triad of sterile ahritis, urethritis, and conjunctivitis. 2. Hemolytic- uremic syndrome: It is due to a toxin secreted by Shigella organisms From Pathologic basis of disease Robbins 8th edition, pg no:669 Ref: RAM DAS NAYAK EXAM PREPARATORY MANUAL FOR UNDERGRADUATES 2nd ed. pg no: 499