This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pathology
[{'content': 'Thymic hypoplasia is: \nSelect and explain. \nA. Wiskott Aldrich syndrome, B. Henoch Schonlein disease, C. Digeorge syndrome, D. Bloom syndrome', 'role': 'user'}, {'content': 'Answer: C \nExplanation: DiGeorge Syndrome (Thymic Hypoplasia) DiGeorge syndrome is caused by a congenital defect in thymic development resulting in deficient T-cell maturation. The disorder is a consequence of a developmental malformation affecting the third and fouh pharyngeal pouches, structures that give rise to the thymus, parathyroid glands, and poions of the face and aoic arch.', 'role': 'assistant'}]