Calcification of patent ductus arteriosus
Abstract: Calcified patent ductus arteriosus (PDA) produces an inverted Y shaped pattern of calcification on x-ray chest PA view.
Detection of calcification of the patent ductus arteriosus is important because of potential problems with surgical management. The simple surgery for closure of patent ductus arteriosus was triple ligation which was a closed heart procedure not requiring cardiopulmonary bypass. But a calcified ductus cannot be dealt with by this procedure. The general dictum is that a calcified ductus needs division and ligation with support of cardiopulmonary bypass. This is more likely to be needed in adult patients. Now device closure is being undertaken even in cases of calcified ductus. Of the twenty one adult patients reported by Bonhoeffer P and associates, the ductus was calcified in seven patients.1
Calcification of a patent ductus arteriosus has been reported by several authors in relatively young patients.2,3,4 Calcification of an obliterated ductus arteriosus or ligamentum arteriosus can also occur. This may be noted as an incidental finding on computerized tomographic imaging of the thorax.5
X-ray appearance of calcification of patent ductus arteriosus
Typical appearance of calcification of patent ductus arteriosus in an X-ray chest PA view is inverted Y shaped. Inverted Y shape is a combined appearance of calcification of the aortic arch extending down to the pulmonary artery and patent ductus arteriosus. Calcification of patent ductus arteriosus on X-ray was first reported by Edward Weiss.6
Calcification of patent ductus arteriosus detected by echocardiography
Detection of calcification of a patent ductus arteriosus by echocardiography has also been reported.7
- Bonhoeffer P, Borghi A, Onorato E, Carminati M. Transfemoral closure of patent ductus arteriosus in adult patients. Int J Cardiol. 1993 Jun;39(3):181-6.
- Ruskin H, Samuel E.Calcification in the patent doctus arteriosus.Br J Radiol. 1950 Dec;23(276):710-7.
- Furuse A, Mizuno A, Nohara F, Ito K, Saigusa M. Calcified patent ductus arteriosus. Jpn Heart J. 1968 May;9(3):316-20.
- Pochaczevsky R, Dunst ME. Coexistent pulmonary artery and aortic arch calcification. Its significance and association with patent ductus arteriosus. Am J Roentgenol Radium Ther Nucl Med. 1972 Sep;116(1):141-5.
- Charles S. White, Linda B. Haramati, Joseph Jen-Sho Chen, Jeffrey M. Levsk. In Cardiac Imaging. Oxford University Press. Fig. 29.6.
- Weiss E. Calcified plaque of the aorta at the entrance of a patent ductus arteriosus: A point in diagnosis. Am Heart J. 1931 Oct;7(1):114–115.
- Vargas-Barron J, Sanches-Ugarte T, Keirns C, González-Medina A, Vázquez-Sanches J. Calcification of patent ductus arteriosus detected by two-dimensional echocardiography. Am Heart J. 1987 Aug;114(2):446-8.
||MCQs in Medicine - Cardiovascular System is based on undergraduate medical curriculum. Though the questions are aimed at basic post graduate entrance examinations, candidates taking competitive exams at the post graduate exit level may also find them useful, especially the explanations for the answers. Undergraduate medical students will find them useful for answering MCQ tests in their regular exams. More than just answering MCQs, the explanations will improve the knowledge and understanding about the conditions discussed.Medicine MCQs - Cardiovascular System Kindle Edition: Click Here for a Preview
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