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The cause of the obstruction may be visible+
===Diagnostic Imaging===
===Diagnostic Imaging===
====Radiography====
====Radiography====
−*Plain abdominal radiography may be all that is needed to reveal the cause of the obstruction.
+*Contrast radiography may be needed if ileus and obstruction cannot easily be distinguished.
====Ultrasonography====
====Ultrasonography====
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===Histopathology===
===Histopathology===
+*Fine needle aspirate may be warranted before surgery if a mass is suspected, such as lymphoma.
+
==Treatment==
==Treatment==
+===Electrolyte and acid-base derangements===
+*If present, these need to be corrected peior to anaesthesia.
+===Surgery===
+*