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General
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Epidemiology
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Pathophysiology
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Clinical features
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Radiology
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Prognostic factors
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Case reports
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Treatment
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Clinical images
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Well-circumscribed highly vascularised lesion

Expansible low density mass

5-cm tumor in hilus

Hypointensity of tumor

Splenic lesion at medial aspect

Lesion in lower spleen

Hypoenhancing mass

Solid tumor

Laparoscopic view

Gross description
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Gross images
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Well-defined nonencapsulated lesion

Well-demarcated, unencapsulated, dark brown mass

0.30.5 cm red-brown multinodular lesions

Splenic resection

Micro description
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Micro images
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Angiomatoid nodules

Slit-like, round irregular-shaped vascular spaces

Concentric rims of collagen fibrils


CD31 highlights the abundant vascular structures

CD34 highlights the capillaries

CD8 highlights occasional sinusoid-like spaces

CD68 highlights scattered single cells

Positive stains
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Electron microscopy descriptions
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Differential diagnosis
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End of Spleen > Vascular tumors > Sclerosing angiomatoid nodular transformation



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