You're the flight surgeon: mesangiocapillary glomerulonephritis (MPGN) with secondary polycythemia.
Westphall
Johann S
JS
D000328:Adult; D000337:Aerospace Medicine; D003937:Diagnosis, Differential; D015432:Glomerulonephritis, Membranoproliferative / Q000175:diagnosis*; D006801:Humans; D006973:Hypertension / Q000209:etiology; D008297:Male; D010819:Physician's Role; D011086:Polycythemia / Q000175:diagnosis* / Q000209:etiology; D014938:Work Capacity Evaluation