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Sternal Cleft Associated with Cantrell's Pentalogy in a German Shepherd Dog.

Abstract
A 5 mo old male German shepherd dog weighing 15.5 kg was presented with an abdominal wall hernia and exercise intolerance. Physical examination showed a grade II/VI systolic heart murmur and an area of cutaneous atrophy overlying a midline supraumbilical wall defect. Thoracic radiography, computed tomography, and ultrasound examination revealed a congenital caudal sternal cleft, a supraumbilical diastasis rectus, and a patent ductus arteriosus. Exploratory surgery confirmed defects of the pars sternalis of the diaphragm and caudoventral pericardium and a persistent left cranial vena cava. Those findings were compatible with Cantrell's pentalogy. Surgical treatment included ligation of the patent ductus arteriosus through the sternal cleft, diaphragmatic reconstruction with paracostal extension of the diaphragmatic defect, pericardial and linea alba appositional reconstruction, and primary approximation of the sternal halves. Growth and exercise activity were normal 10 mo after surgery. The discovery of a midline cranial abdominal wall, pericardial, diaphragmatic, or sternal defect should prompt a thorough examination to rule out any possible associated syndrome. Cantrell's pentalogy presents various degrees of expression and is rare in dogs. Management involves early surgical repair of congenital anomalies to protect the visceral structures. The prognosis in dogs with mild forms of the syndrome is encouraging.
AuthorsManuel Benlloch-Gonzalez, Cyrill Poncet
JournalJournal of the American Animal Hospital Association (J Am Anim Hosp Assoc) 2015 Jul-Aug Vol. 51 Issue 4 Pg. 279-84 ISSN: 0587-2871 [Print] United States
PMID26083439 (Publication Type: Case Reports, Journal Article)
Topics
  • Animals
  • Dog Diseases (congenital, diagnosis, pathology, surgery)
  • Dogs
  • Male
  • Musculoskeletal Abnormalities (diagnosis, pathology, surgery, veterinary)
  • Pentalogy of Cantrell (diagnosis, pathology, surgery, veterinary)
  • Sternum (abnormalities, pathology, surgery)

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