[Kidney cancer and pregnancy]

Renal cancer is rare in pregnant women. Through a study of two cases, the authors underline diagnostic, therapeutic and pathogenic aspects of this association. Two female patients, 26 and 34 years old, were admitted for renal tumor, discovered respectively at the first and the second trimester of pregnancy. Investigation's exams for tumor extension were negative. They were based on ultrasound exam (2 cases), CT scan (1 case) and chest X ray (2 cases). The histological examination concluded to a bright cell carcinoma. In the former case, evolution was marked by spontaneous abortion at the fifth post-operative day, and the absence of metastasis after 16 months. In the second case, the evolution was worse because of metastasis occurrence four months after normal delivery. Pregnancy represents a privileged period for the discovery of renal tumor. Exams of tumor extension must consider pregnancy age. The treatment is similar to that of usual renal cancer and is associated to a simultaneous supervision of the pregnancy.