This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
Which structure involvement is uncommon in Churg-Strauss syndrome? 
Select and explain. 
A. Skin, B. Lungs, C. Kidney, D. Periphereal nerve
C: Kidney
Answer: C: Kidney 
Explanation: Churg-Strauss syndrome: Lung: severe asthmatic attacks and the pulmonary infiltrates predominate the clinical pictureStriking eosinophilia seen in >80% of patientsMononeuritis multiplex seen in up to 72% of patientsSkin lesions- in about 51% of patientsRenal disease: generally less common and less severe (Ref: Harrison's 17/e p2124)