<prompt> An asymptomatic patient has proteinuria and hematuria that is glomerular in origin on a routine urinalysis. Which of the following is the most likely diagnosis?diabetes mellitus DMamyloidosisimmunoglobulin A IgA nephropathy Bergers diseasefocal glomerulosclerosis  <response>: Other causes of asymptomatic hematuria, with or without proteinuria, include sickle cell disease, Alports syndrome, resolving glomerulonephritis, and thin basement disease. Bergers disease is characterized by immunoglobulin A IgA deposits in the mesangium. It most commonly affects older children and young adults, and is more common in Blacks than Whites. Macroscopic hematuria may occur with inter-current illness or vigorous exercise. The prognosis is variable but tends to progress slowly. Spontaneous remissions are more common in children than in adults. About 20-50 of patients develop end-stage renal disease within 20 years of diagnosis. 