Polycythemia and hydronephrosis or renal tumors.
D006801:Humans; D006869:Hydronephrosis / Q000150:complications*; D007680:Kidney Neoplasms; D011086:Polycythemia / Q000209:etiology*
HYDRONEPHROSIS/complications; KIDNEYS/neoplasms; POLYCYTHEMIA/etiology and pathogenesis