RESUMO
Multidetector computed tomography (MDCT) and Doppler ultrasound findings of a renal cell carcinoma invading the right ovarian vein are presented. An MDCT study performed for evaluation of macroscopic hematuria showed a heterogeneously enhancing malignant thrombus in the right ovarian vein that was in continuity with inferior vena cava and right renal vein thrombi of identical characteristics. Further investigation with Doppler ultrasound confirmed these findings and showed arterial blood flow of low resistance within the ovarian vein and inferior vena cava thrombi. To the authors' knowledge, this is the first report of MDCT and Doppler ultrasound findings of a renal cell carcinoma invading the right ovarian vein.
Assuntos
Carcinoma de Células Renais/diagnóstico , Carcinoma de Células Renais/patologia , Neoplasias Renais/diagnóstico , Neoplasias Renais/patologia , Ovário/irrigação sanguínea , Neoplasias Vasculares/diagnóstico , Neoplasias Vasculares/patologia , Idoso , Feminino , Humanos , Invasividade Neoplásica , Tomografia Computadorizada por Raios X/métodos , Ultrassonografia DopplerRESUMO
OBJECTIVE: The purpose of this study was to design an alternative imaging technique to CT urography in patients with high-grade urinary tract obstruction, with or without impaired renal function, that uses the superior resolution of MDCT and avoids IV contrast material administration. CONCLUSION: Antegrade MDCT pyelography is an alternative imaging technique to CT urography in patients with high-grade urinary tract obstruction with or without impaired renal function. It enables accurate diagnosis of the level of obstruction, as well as its etiology, including nephroureterolithiasis, urothelial tumors, primary congenital megaureter, uretero-pelvic junction stenosis, ureteral edema, ureteral stricture, retroperitoneal fibrosis, and pelvic lymphadenopathy.