Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

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Chapter Three The Abd omen 329 A C B Fig. 3-95 A, A 7-year-old male Miniature Schnauzer that vomited 5 times the previous day. The dog has experienced multiple similar bouts. Palpation revealed abdominal tenderness. The lateral radiograph revealed an ill-defined tissue density (white *) caudal to the stomach that displaces the transverse colon (white c) caudally. Differential diagnoses include pancreatic mass, splenic mass, or mass arising from the caudal gastric wall. Diagnosis: Pyogranuloma of the pancreas due to chronic relapsing pancreatitis. B, A 5-year-old male domestic short-haired cat with vomiting for 1 week and a palpable cranial abdominal mass. The lateral radiograph revealed a tissue-dense mass (white *) between the stomach and the transverse colon (white c). C, The ventrodorsal view of the cat revealed a mass (black arrows) just to the right of the midline and cranial to the right kidney (white arrows). Differential diagnoses include chronic pancreatitis, pancreatic neoplasia, or pancreatic bladder. Diagnosis: Pancreatic bladder. S M A L L I N T E S T I N E S Density Changes. Small intestinal lesions may be detected on survey radiography by an abnormal density within the intestinal lumen. The bowel will normally contain fluid (tissue density), food (which may contain tissue- and bone-dense material), or air. Air contained within the GI tract is usually the result of aerophagia. 83 Occasionally, a segment of
330 Small Animal Radiolo g y and Ultrasono graphy Fig. 3-96 A 7-year-old neutered female domestic short-haired cat had been vomiting and had an abdominal mass. The lateral view revealed a large mass (C) located immediately caudal to the stomach. Diagnosis: Pancreatic pseudocyst. Fig. 3-97 Transverse sonograms of the cranial abdomen of a 4-year-old spayed female Schnauzer with a history of acute abdominal discomfort and abdominal pain. There is a heteroechoic mass surrounded by hyperechoic fat that extends from the spleen (A, open arrow) to the duodenum (C and D, open arrows). There is a small amount of free peritoneal fluid (B, closed arrow). This is indicative of pancreatitis or a pancreatic mass. Diagnosis: Pancreatitis. A B C D small bowel may contain material that has the density and pattern of feces, a mixture of tissue and bone density. This is usually indicative of small bowel obstruction, with desiccation of material trapped proximal to the obstruction (Fig. 3-100). The bowel may contain metal or mineral-dense material, which may indicate ingestion of toxic materials (e.g., lead, zinc); excretion of contrast agents, due to bile and small intestinal excretion of intravenous contrast medium in a patient with severe renal failure; medications such as Kaopectate, Pepto Bismol, or zinc oxide; or foreign bodies such as metal oxide–coated recording tapes, coins, needles, or staples (Figs. 3-101 and 3-102).
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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 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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