Erythrocythemia (Polycythemia) and Hydronephrosis

Abstract

A GROWING series of case reports suggest that there may be a relation between kidney tumors and polycythemia. In a review of 273 cases of hypernephroma, polycythemia was observed in 5 (1.8 per cent).¹ Gonley et al.² collected 3 cases of polycythemia in reviewing 139 cases of hypernephroma. Conversely, 2 patients with hypernephroma were found in a survey of 125 patients with idiopathic polycythemia.³ Lawrence⁴ stated that he had observed 2 cases of hypernephroma among 159 patients with polycythemia vera. These reports suggest that renal-cell carcinoma will be discovered in 1 or 2 per cent of patients with diagnoses of . . .