simultaneous cesarean section and radical nephrectomy with tumor thrombectomy during pregnancy

Renal cell carcinoma (rcc) is uncommon during pregnancy. accurate and timely diagnosis and careful preoperative planning are essential to optimize the patient outcomes. a 27-year-old pregnant woman presented with a large mass in left kidney and inferior vena cava (ivc) tumor thrombus, diagnosed at 33 weeks gestation. she was evaluated with an initial impression of pyelonephritis at other institutions and referred to our center after a delay of more than 3 weeks. rcc with ivc tumor thrombus has the potential to increase the likelihood of thromboembolic events including pulmonary embolism during pregnancy. furthermore, simultaneous radical nephrectomy with ivc thrombectomy and cesarean section (cs) is challenging and might be associated with significant intraoperative blood loss. after consultation with an obstetrician and cardiac surgery team, our patient underwent cs and simultaneous left radical nephrectomy with ivc thrombectomy at 34 weeks gestation. the postoperative course was uneventful and histologic analysis revealed pt3bn0m0 papillary rcc.