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Diagnostic ultrasound ( PDFDrive )

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CHAPTER 7 The Pancreas 217

GB

Pseudomass

D

A

B

FIG. 7.13 Normal Anatomic Variations: Pancreatic Head Pseudomass. Variations in shape of the pancreatic head include bulges to the right

of gastroduodenal artery. (A) Transverse image of a pseudomass that extends to the right of the gastroduodenal artery (arrow). (B) Transverse

image of another pseudomass. D, Duodenum.

A

B

FIG. 7.14 Fatty Iniltration of Pancreas. (A) In this transverse image, the appearance and echogenicity of the pancreas (calipers) do not differ

substantially from many normal glands. (B) Computed tomography scan shows diffuse fatty iniltration. (Courtesy of Drs. Vinay Duddlewar and

Jabi Shiriki.)

A

B

FIG. 7.15 Hypoechoic Ventral Pancreas. (A) Transverse sonogram of pancreatic head. Note the hypoechoic uncinate (arrows), likely related

to less fatty change than present in the dorsal component (D). (B) Longitudinal sonogram of pancreas. The more posterior uncinate (arrows) is

lower in echogenicity than the remainder of the pancreas.

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