Chapter 1 Beginning of research Chapter 2 Acquired cystic disease of the kidneys (1) Definition of acquired cystic disease of the kidneys (2) Prevalence (3) Primary disease (4) Histology of acquired cystic disease of the kidneys (5) Origin of cysts (6) Complications of acquired cystic disease of the kidneys (7) Characteristics of acquired cystic disease of the kidneys 1) The prevalence increases with the duration of dialysis 2) Gender difference 3) Dialysis method 4) Dialyzer membrane 5) Relationship with erythropoietin (8) Effects of kidney transplantation (9) Diagnosis of acquired cystic disease of the kidneys (10) Causes of acquired cystic disease of the kidneys (11) 20-year follow-up of acquired cystic disease of the kidneys Chapter 3 Renal cell carcinomas of dialysis patients (1) There are 2 types of renal cell carcinoma in dialysis patients (3) Prevalence (3) Histology (4) Results of surveys concerning renal cell carcinoma in dialysis patients (5) Differences between Japan and the United States (6) Characteristics (7) Diagnosis 1) Ultrasonography 2) CT 3) MRI 4) Difficulties in the diagnosis of renal cell carcinoma in dialysis patients 5) Screening (8) Treatment (9) Prognosis (10) Etiology Chapter 4 RCC in our dialysis patients