MSRA-2371

MSRA-2371

A 26-year-old man undergoes a routine medical examination and is found to have 3+ haematuria. This is confirmed on microscopy and on a second urinalysis 9 months later. He recalls experiencing two episodes of red urine in the past year, both of which occurred during upper respiratory tract infections. There is no family history of renal disease. He has no oedema but his blood pressure is 150/100 mmHg. His plasma creatinine level is 65 μmol/l (reference range 53–106 μmol/l). What is the most likely finding on a renal biopsy?