Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

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Chapter Three The Abd omen 309 Fig. 3-70 A 2-year-old female Bichon Frisé with occasional seizures and periods of stupor after eating. The splenoportogram revealed direct flow of portal blood to the liver and the presence of a short straight shunt (black arrow) directly to the caudal vena cava (CVC). Differential diagnoses include extrahepatic portacaval shunt or persistent patent ductus venosus. Diagnosis: Persistent patent ductus venosus. Fig. 3-71 A 2-year-old male Yorkshire Terrier with postprandial depression and occasional seizures. Survey radiographs had revealed a small liver. The operative mesenteric portogram revealed a solitary shunt going from the portal vein directly to the caudal vena cava. The shunt vessel (black arrow) is clearly caudal to the caudal border of the liver and goes directly to the caudal vena cava (black cvc). An esophageal stethoscope is seen in the caudal esophagus. The renal pelves and ureters are seen due to contrast excretion from prior injections of contrast medium during this study. Diagnosis: Solitary extrahepatic portocaudal vena caval shunt. No hepatic vessels were seen. This suggested a poorer-thannormal prognosis for shunt ligation; however, partial ligation of the shunt resulted radiographically in increased hepatic blood flow and a resolution of clinical signs.
310 Small Animal Radiolo g y and Ultrasono graphy Fig. 3-72 A 2-year-old Yorkshire Terrier had occasional seizures and elevated bile acid levels. An operative mesenteric portogram reveals shunting of flow away from the liver through an anomalous shunt vessel (S) to the azygous vein (A). Diagnosis: Portoazygos shunt. Fig. 3-73 Transverse (A to C) and longitudinal (D to F) sonograms of the liver of a 3-month-old female mixed breed dog with a history of chronic diarrhea and hypoalbuminemia. There is an enlarged tortuous vein that extended from the portal vein to the caudal vena cava. This is indicative of a portosystemic shunt. Diagnosis: Extrahepatic portosystemic shunt. A B C D E F
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SAUNDERS An Imprint of Elsevier Sci
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C H A P T E R O N E Introduction GE
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Chapter One Introduction 3 Fig. 1-1
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metal. Soft tissues or organs surro
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Inadequate penetration will result
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Chapter One Introduction 9 signal i
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Chapter One Introduction 11 previou
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Chapter One Introduction 13 Mach ba
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Chapter One Introduction 15 malitie
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Chapter One Introduction 17 indicat
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Chapter One Introduction 19 Fig. 1-
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Chapter One Introduction 21 Fig. 1-
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Chapter One Introduction 23 24. Lev
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26 Small Animal Radiolo g y and Ult
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A B C Fig. 2-63 A 10-year-old male
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Fig. 2-101 A 7-year-old male mixed
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Fig. 3-234 A 7-year-old female Brit
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Fig. 4-59 A 9-year-old female Russi
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Fig. 4-73 A 2-year-old female Saint
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Fig. 4-97 A 10-year-old male mixed
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Fig. 4-107 A 4-year-old male Chow C
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I N D E X A Abdomen, abnormal prese
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Index 729 Bone, cysts of, 525-527,
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Index 731 Ear, abscess of—cont’
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Index 733 Hydrocephalus—cont’d
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Index 735 Lungs. See also Pulmonary
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Index 737 Pregnancy, determination
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Index 739 S-shaped aortic deformity
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Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

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