The most common malignant neoplasm of the kidney is the hypernephroma or renal cell carcinoma. Which of the following statement is true concerning renal neoplasms?
Most common mode of spread is lymphatic . Gleason Grading is used in RCC . A "tumour deformity" on IVP is diagnostic of a renal cell carcinoma Renal cell carcinomas can produce a variety of hormone or hormone-like substances