Abstract
Background: We report a case of polymorphous low-grade adenocarcinoma (PLGA) of the palate showing features similar to adenoid cystic carcinoma (ACC) in smear cytology.Case and Conclusion: Imprint specimens from the cut surface of biopsied tissue in a 78-year-old woman with a painless mass in the palate contained many neoplastic cells arranged in tight clusters, and mucous ball-like structures, pseudopapillary, tubular, and solid patterns were observed. Cells forming these clusters varied in size and had abundant eosinophilic, granular cytoplasm. Nuclei were round to oval and had a relatively smooth configuration. Although ACC was suspected cytologically, PLGA was confirmed by histopathological section. As opposed to imprint specimens obtained from resected tumors, no indian file arrays or concentric targetoids were detected in the imprint from the biopsied specimen, which thus led to diagnostic failure.
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