[Synchronous and metachronous bilateral hypernephroid renal carcinomas]

In 1.4-3.9% Grawitz tumours occur bilaterally, either synchronously or metachronously. Three patients with a bilateral Grawitz tumour are described, two with a synchronous and one with a metachronous one. Epidemiology, pathology, clinical symptoms, radiodiagnostics, therapy and prognosis of the bilateral Grawitz tumours are discussed.