Case Of the Week (COW) 12 May 2013
Answer:
PSEUDOCOARCTATION
Findings:
SCANO: Two apparent left side arches noted. Arch 1 lies higher than the normal location for the aortic arch. Arch 2 lies lower than the normal location .
CT: Arch 1 lies high in the thorax extending to the thoracic inlet. The Redundant Descending aorta kinks at the level of ductus forming the second arch. No evidence of collaterals noted.
Discussion:
Dotter and Steinberg introduced the term in 1952. True coarctation - aortic arch does not reach the level of the clavicle . The aortic arch of pseudocoarctation is elongated and may arise higher than the clavicle . Absence or only a mild degree of stenosis of the aortic lumen. Absence of collateral circulation. Absence of left ventricular hypertrophy and ascending aortic dilation.
Contributed By:
Dr Balaji A, Prof Dr Malathy, Dr Manimegala
Barnard Institute of Radiology, Chennai
Answer:
PSEUDOCOARCTATION
Findings:
SCANO: Two apparent left side arches noted. Arch 1 lies higher than the normal location for the aortic arch. Arch 2 lies lower than the normal location .
CT: Arch 1 lies high in the thorax extending to the thoracic inlet. The Redundant Descending aorta kinks at the level of ductus forming the second arch. No evidence of collaterals noted.
Discussion:
Dotter and Steinberg introduced the term in 1952. True coarctation - aortic arch does not reach the level of the clavicle . The aortic arch of pseudocoarctation is elongated and may arise higher than the clavicle . Absence or only a mild degree of stenosis of the aortic lumen. Absence of collateral circulation. Absence of left ventricular hypertrophy and ascending aortic dilation.
Contributed By:
Dr Balaji A, Prof Dr Malathy, Dr Manimegala
Barnard Institute of Radiology, Chennai