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General
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Terminology
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Clinical features
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Case reports
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Treatment
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Gross description
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Gross images
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Large, well circumscribed tumors

Multiple, polypoid nodules

Well-circumscribed with firm consistency

Necrosis, hemorrhage, and cystic degeneration

Micro description
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Micro images
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Hyperplastic ducts surrounded by cellular fibrous stroma

Circumscribed tumor

Leaf like processes

Adjacent fibroadenoma

Hyperplastic duct surrounded by cellular fibrous stroma

Well circumscribed tumor with leaf-like ductal epithelium

Apocrine hyperplasia

Focal nuclear pleomorphism and mitotic figures

With LCIS

Low-grade

Cysts containing papillary structures

Low-grade phyllodes tumor

PASH-like changes in stroma

Myxoid background

Stroma is hyalinized

Nodular structure

Fibroblastic stromal cells are present

Adenosis-like appearance

Tubular epithelial elements

Epithelial hyperplasia

CD117

CD31

Ki-67

Positive stains
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Electron microscopy description
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Molecular / cytogenetics description
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Differential diagnosis
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End of Breast - nonmalignant > Benign tumors / changes > Phyllodes tumor - benign



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