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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
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pubmed:dateCreated |
1994-9-12
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pubmed:abstractText |
A case of basaloid-squamous carcinoma of the esophagus in an 83 year old man is reported. The esophageal tumor showed a fungating growth at the junction of the middle and lower esophagus and was composed microscopically of submucosal multiple nests with solid and cribriform-like patterns accompanied with a small focus of squamous cell carcinoma adjacent to the overlying esophageal epithelium. The structural features closely resembled those of basaloid-squamous carcinoma. The submucosal tumor cells were immunohistochemically positive for epithelial membrane antigen, wide spectral keratin, alpha actin and S-100 protein. By electron microscopy, the tumor cells had microvilli, desmosomes and bundles of myofilaments, and replicated basement membranes were frequently observed adjacent to the nests. The positive immunoreaction of S-100 protein and alpha actin and the existence of bundles of myofilaments indicated that the present tumor did not correspond well with basaloid-squamous carcinoma. In addition, there was no evidence of true glandular lumina in the tumor nests, a finding which was inconsistent with that of adenoid cystic carcinoma. From the immunoreactivity of S-100 protein and ultrastructural features, it was considered that the present submucosal tumor had originated from undifferentiated pluripotential primitive cells, which differentiated to myoepithelial cells.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Jun
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pubmed:issn |
1320-5463
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
44
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
466-74
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:8055114-Aged,
pubmed-meshheading:8055114-Aged, 80 and over,
pubmed-meshheading:8055114-Carcinoma, Adenoid Cystic,
pubmed-meshheading:8055114-Carcinoma, Squamous Cell,
pubmed-meshheading:8055114-Carcinoma, Transitional Cell,
pubmed-meshheading:8055114-Esophageal Neoplasms,
pubmed-meshheading:8055114-Humans,
pubmed-meshheading:8055114-Immunohistochemistry,
pubmed-meshheading:8055114-Male
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pubmed:year |
1994
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pubmed:articleTitle |
A case of basaloid-squamous carcinoma of the esophagus: immunohistochemical and ultrastructural studies.
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pubmed:affiliation |
Department of Pathology, Hachioji Medical Center, Tokyo Medical College, Japan.
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pubmed:publicationType |
Journal Article,
Case Reports
|