Kidney tumor - cysts, children, adult benign

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Kidney tumor - cysts, children, adult benign

Benign (usually) adult tumors

Lymphangioma

Reviewers: Mandolin Ziadie, M.D. (see Reviewers page)
Revised: 27 March 2012, last major update January 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.

General
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● Rare; < 50 cases reported
● Also called renal lymphangiectasia
● Characterized as a developmental abnormality of the renal lymphatic system
● May be confused with autosomal dominant polycystic kidney disease or multilocular renal cysts

Epidemiology
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● Mean age 34 years, 60% female (J Urol 1977;118:22)

Case reports
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● 28 year old man with microscopic hematuria (Radiology 2001;219:442)
● 59 year old man (Int J Urol 2002;9:178)
● Primary renal lymphangioma (Hum Pathol 1992;23:465)

Gross description
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● Well circumscribed, multicystic

Gross images
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Large cystic lesion adjacent to renal pelvis

Large intrarenal lesion has honeycomb appearance

Mass of thin-walled cysts in mid-kidney

Micro description
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● Cysts lined by flattened endothelium

Gross images
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Vascular spaces (arrows) lined with flattened endothelial cells

Positive stains
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● D2-40, CD31 and Factor VIII-related antigen

End of Kidney tumor - cysts, children, adult benign > Benign (usually) adult tumors > Lymphangioma

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