This is a 1-month-old male diagnosed with transposition of big vessels, treated with ASA and carvedilol; he was sent to a multispecialty hospital when he was 11 years old. Here, a CT angiogram was donde revealing an ambiguous situs with levocardia, two bilobed lungs, left liver, right stomach, right polysplenia, interruption of the IVC with hemiazygos continuation, four pulmonary veins reached the left atrium, presenting two SVC that reached the RA and IVC interruption with hemiazygos continuation to the left SVC. An ASD was observed, the left atrium communicated with a small and inferiorly situated ventricle, the RA communicated with a larger ventricle of superior situation, with an interventricular communication that can be taken as a single ventricle, transposition of great vessels, the aorta in front of the pulmonary artery. The suprahepatic veins drained directly with a common trunk to the RA. ().\nWith these findings, a pulmonary artery–left vena cava anastomosis was performed; his postoperative course was uneventful and was discharged home.\nFour years later, the patient consulted because of cyanosis, growth retardation and pulse oximetry of 70%; therefore, a second surgery was decided after right SVC ligation pulse oximetry raised to 90%.
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. ().