Endometrial Intraepithelial Neoplasia (EIN)

Epidemiology and Etiology:

· Clonal process

Common sites:

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Gross features:

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Histologic features:

· Architecturally crowded glands

· Volume percentage stroma (VPS) < 55%

· Size at least 1-2 mm

· Altered or demarcated cytology from the background endometrial glands

· Exclude benign processes

· Polyp

· others

· No features of invasion

Immunophenotype:

Marker:

Sensitivity:

Specificity:

Molecular features:

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Other features:

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References:

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