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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2001-5-30
pubmed:abstractText
We report 4 distinctive renal epithelial neoplasms that are essentially identical at the morphologic and immunohistochemical levels and do not fit an accepted category in the existing classification of these lesions. The patients were all females, with ages ranging from 32 to 79 years (mean, 50 years). The tumors were well circumscribed and were composed of uniform, predominantly low cuboidal cells with eosinophilic, focally vacuolated cytoplasm. Tumor cells generally formed interconnecting tubules, with smaller areas of cordlike growth and spindling in a bubbly, myxoid stroma. All tumors were confined to the kidney, and all were immunoreactive for high-molecular-weight cytokeratin 34betaE12, cytokeratin 7, epithelial membrane antigen, and cytokeratin cocktail AE1/3. Only 1 tumor was focally immunoreactive for Ulex europaeus agglutinin. Ultrastructural study showed tumor cells forming tubular structures reminiscent of the loop of Henle or distal convoluted tubule. Follow-up in all 4 cases was benign. These distinctive tumors may be confused with aggressive sarcomatoid renal cell carcinomas because of their spindled morphology. The morphologic, immunohistochemical, and ultrastructural features of these lesions indicate differentiation toward distal nephron segments. Similar tumors probably have been reported among low-grade collecting duct carcinomas or tumors "possibly related to the loop of Henle."
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0046-8177
pubmed:author
pubmed:issnType
Print
pubmed:volume
32
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
506-12
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Low-grade myxoid renal epithelial neoplasms with distal nephron differentiation.
pubmed:affiliation
Department of Pathology, The Johns Hopkins Hospital, Baltimore, MD 21231-2410, USA.
pubmed:publicationType
Journal Article