A surgical procedure that involves making an incision into both the stomach and duodenum, usually for diagnostic or exploratory purposes.
From 'gastro-' + 'duodeno-' + '-tomy' from Greek 'tomē' meaning incision. The '-tomy' suffix indicates cutting or incision rather than creating a permanent opening.
The difference between '-tomy' (cutting into) and '-stomy' (creating an opening) is subtle but crucial—one is exploratory or temporary, the other creates a permanent bypass!
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