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  • Title: Polymorphous low grade adenocarcinoma of the salivary gland. Diagnosis by fine needle aspiration cytology.
    Author: Sáenz-Santamaría J, Catalina-Fernandez I.
    Journal: Acta Cytol; 2004; 48(1):52-6. PubMed ID: 14969181.
    Abstract:
    OBJECTIVE: To describe the fine needle aspiration cytology findings of polymorphous low grade adenocarcinoma of the salivary gland. STUDY DESIGN: The authors reviewed the cytologic findings of 5 cases of polymorphous low grade adenocarcinoma. All cases were confirmed by histologic examination. RESULTS: All cases showed similar cytologic findings. The smears had high cellularity with a population of mixed epithelial and myoepithelial cells. These cells formed branching papillae, sheets and clusters. The epithelial cells were uniform, with round to ovoid nuclei; absent or inconspicuous nucleoli; and a moderate amount of dense cytoplasm. Occasionally the cells formed spherical structures containing hyaline globules. Myxoid matrix, either dispersed in the background or interspersed with the cellular elements, was also seen often. CONCLUSION: Polymorphous low grade adenocarcinoma should be cytologically differentiated from adenoid cystic carcinoma, monomorphic adenoma and pleomorphic adenoma. Recognition of subtle cytologic features. may be useful in the differential diagnosis.
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