title: Quiz page. A 49-year-old man presented with 1 month history of bilateral lower extremity swelling, dyspnea-on-exertion, and several month of foamy, tea-colored urine.
authors.affiliation: Division of Nephrology, University of Minnesota, MN, USA.
authors.forename: Marc L
authors.initials: ML
authors.lastname: Weber
authors.forename: Jeffey
authors.initials: J
authors.lastname: Connaire
mesh_terms: D003937:Diagnosis, Differential; D004417:Dyspnea / Q000209:etiology; D004487:Edema / Q000209:etiology; D005921:Glomerulonephritis / Q000175:diagnosis; D015432:Glomerulonephritis, Membranoproliferative / Q000175:diagnosis* / Q000473:pathology; D006526:Hepatitis C / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011507:Proteinuria / Q000209:etiology