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See also: Sentinel Nodes

Terminology
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Clinical description
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Case reports
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Clinical images
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Courtesy of Dr. Mark R. Wick

Micro images
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Courtesy of Dr. Mark R. Wick

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Axillary nodal metastases

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Metastatic breast carcinoma and melanoma

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Subcapsular metastasis: H&E and keratin

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Metastatic tumor (A) with adjacent histiocytes (B)

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Various images

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Metastatic carcinoma, benign inclusions and nevus cells



False positives (i.e. not metastatic breast carcinoma):
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Intramammary lymph node

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Metastatic ovarian serous papillary adenocarcinoma

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DCIS arising in intraductal papilloma

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Sclerosing adenosis

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Benign epithelial inclusions - Fig 1: CK 5/6+; Fig 2: p63+

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Left: heterotopic glands with structure of mammary lobule Right: myoepithelial cells (arrows) and basement membrane are present

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Lactational histiocytosis

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Histiocytes (FNA)

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Clusters of nevus cells have indistinct cell borders and small uniform nuclei, and are S100+ (as are histiocytes)

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Hemangioma

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Tattoo pigment

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Lipogranulomatosis due to triglyceride-filled breast implant



Features of chronic lymphedema of arm:
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Hyperkeratosis, thickened dermis with edema, elastosis, fibrosis, congested capillaries (arrow) and lymphocytes

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Pseudo-
epitheliomatous hyperplasia, hyperkeratosis, dilated dermal vascular channels

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Dilated dermal vascular channels with prominent endothelial cells

Cytology images
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Various images

Videos
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Differential diagnosis
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End of Breast malignant, males, children > Breast cancer > Axillary lymph node examination



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