Renal cell carcinoma in pregnancy.

Renal cell carcinoma is the most common renal neoplasm associated with pregnancy. The most common presenting symptoms are pain and a palpable mass. Although renal neoplasms in pregnancy are rare, the pregnancy demands special consideration in the methods of diagnostic evaluation. The relationship between renal cell carcinoma and pregnancy is unclear. Treatment is usually radical nephrectomy regardless of the stage of pregnancy. Two new cases are presented with a review of the literature.