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Papillary Serous Carcinoma : Microinvasion

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Comments:
Foci of microinvasion consist of single epithelial cells or small clusters with abundant eosinophilic cytoplasm. They should not exceed 10 sq.mm in area or 3 mm in linear dimension. Stromal reaction is usually minimal or absent and such areas may be overlooked in routine H&E sections.

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