Abnormal systemic venous connections

Which one is not main venous system in 4-week embryo?

• Umbilical veins

• Vitelline veins

• Omphalo-mesenteric veins

• Cardinal veins

Sinus venosus develops by confluence of

• Umbilical veins

• Vitelline veins

• Omphalo-mesenteric veins

• Cardinal veins

Normally, LSVC will involute and becomes the ligament of

​ ​What form the coronary sinus?

• Left horn of sinus venosus

• Right horn of sinus venosus

• Common cardinal vein

• Right anterior cardinal vein

• Left anterior cardinal vein

Where is the hemiazygos drain to?

• RSVC

• Left innominate vein

• Azygos vein

• IVC

What is the cause of this condition?

• Failure of high transverse capillary plexus that forms LIV

• Failure of left anterior and common cardinal vein to involute

• Invagination between left horn of sinus venosus and LA

• Remnant of early embryonic venous channel

In a patient with TAPVR with obstruction, echocardiogram shows a vessel from pulmonary vein to left innominate vein. With CFM, it flows in cephalad direction. Which of the following is the most likely diagnosis

• Levoatrialcardinal vein

• Persistent LSVC

• Vertical vein

• Left superior intercostal vein

What is the cause of this condition?

• Absence hepatic segment of IVC

• Absence supraheptic segment of IVC

• Absence of infrarenal segment of IVC

• Absence of posterior cardinalis

Which lesion highly supposes to be found in this patient?

• TAPVR

• Unroofed CS

• Levoatrialcardinal vein

• Interrupted IVC

What is the unpaired part in the development of IVC?

• 1

• 2

• 3

• 4

• 5