A 14-year-old male, without relevant history, consulted the urologist for enuresis and was diagnosed with the right varicocele. CT angiography was performed, showing an IVC anomaly, with partial hypoplasia of the upper segment, persistence of the left SVC to which the left and right renal veins drain, the left renal vein with a retro-aortic segment showing signs of aorto-vertebral impingement, a right dilated and tortuous testicular vein ending in the right renal vein and continuation of the azygos in the visualized thoracic segment. ().
A 73-year-old female patient with no relevant history, upper and lower endoscopies were performed due to dyspepsia, biopsies of an anal lesion reported a neuroendocrine carcinoma, in order to stage the malignancy, CT of the abdomen and pelvis revealed a lymphatic mass in front of the sacrum and presence of an anatomical variant of the left IVC, which continues with the azygos vein to the right of the thoracic spine. ().