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===Diagnostic Imaging===
 
===Diagnostic Imaging===
Plain radiographs should be taken of the
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abdomen and pelvis, with subsequent contrast studies
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Plain radiographs should be taken of the abdomen and pelvis in an attempt to confirm megacolon and to investigate underlying causes. The enlarged, faces-filled colon is easily seen on these x-rays. Subsequent contrast studies or abdominal ultrasound may help identify an underlying cause, such as mural or obstructive masses.
and ultrasound examination if required.
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===Endoscopy===
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Colonoscopy may be necessary to rule out obstructive masses in the large intestinal wall or lumen.
    
===Pathology===
 
===Pathology===
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