Malignant epithelial lacrimal sac tumors are rare cancers with significant recurrence rates. Correct diagnosis and appropriate therapy require a multidisciplinary management approach. Treatment of these malignant epithelial tumors is first and foremost complete surgical removal with wide excision.

The results of this retrospective study suggest that radiotherapy can be used to treat nasoethmoidal adenocarcinoma, but its usefulness should be confirmed with further prospective studies.

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