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What diagnostics are used to confirm adenocarcinoma? 

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Care must be taken to differentiate epithelioid-type GISTs from adenocarcinoma.
Adenocarcinoma was diagnosed in 9 patients.
These results suggest that current screening practices in the United States are insufficient to detect a significant proportion of adenocarcinoma precursor lesions.
These findings are useful for early diagnostics and post-surgery prognosis of tumors.

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