Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2003-10-17
pubmed:abstractText
Several histological variants of colorectal carcinoma have been reported, some of them bearing prognostic significance, others only incidental findings showing unusual morphological features. The current report was aimed to describe the histological, immunohistochemical and ultrastructural features of an oncocytic adenocarcinoma of the rectum occurring in a 66-year-old woman. Histologically, it was a moderately differentiated adenocarcinoma composed by glandular structures lined by eosinophilic cells. The latter showed abundant granular cytoplasm and large nuclei with prominent nucleoli. Several glandular structures contained intraluminal, basophilic and non-birifrangent microcalcifications. The tumour cells displayed consistent anti-mitochondrial antigen, carcinoembryonic antigen, p53, CDX2 and cytokeratin 20 immunoreactivity. Ultrastructurally, more than 80% of the cytoplasmic area was occupied by abnormal mitochondria, while exocrine or endocrine granules were undetectable. The tumour infiltrated the intestinal wall through the subserosal tissue, but lymph node or distant metastases were absent. The patient is disease free 22 months after surgery. Based on the above features, this case could be appropriately named oncocytic adenocarcinoma with intraluminal microcalcifications. Like gastric neoplasms showing similar morphologic features, this tumour might have a better prognosis, and the presence of microcalcifcations could help its proper recognition at a pre-operative stage.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0945-6317
pubmed:author
pubmed:issnType
Print
pubmed:volume
443
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
579-82
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Oncocytic adenocarcinoma of the rectum with diffuse intra-luminal microcalcifications: the first reported case.
pubmed:affiliation
Department of Pathological Anatomy and Genetics, University of Bari, Bari, Italy.
pubmed:publicationType
Journal Article, Case Reports