system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
RBC casts seen in
assistant
The correct answer is  RBC casts are a feature of glomerular damage .Normally <3 RBC/HPF are going to leak. But in the case of glomerular damage the number of RBC in the urine will exceed the limit mentioned above and these RBC get impinged on Tamm horsefall protein. The resultant RBC casts can be seen under microscopic examination of urine. Refer robbins 9/e p912