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4562 Pathology

A 32-year-old man complains of recurrent hematuria since his youth. The hematuria typically occurs following upper respiratory tract infections. Vital signs are normal. Urinalysis shows proteinuria, hematuria, and a few red blood cell casts. Laboratory studies disclose normal levels of BUN and creatinine. The ANA and ANCA tests are negative. For the patient, which of the following patterns of IgA immunofluorescence would be expected in the renal biopsy?

AGranular capillary membrane deposition
BLinear basement membrane staining
CMesangial deposition
DPerivascular location
Pathology
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