Abstract:
:E-cadherin expression patterns in acinar cell carcinomas (ACCs) of the pancreas have not been well documented. Herein, we present a hitherto undescribed case of E-cadherin-negative ACC with a solid pseudopapillary growth pattern in a 65-year-old man. We used an antibody against the extracellular domain of E-cadherin. As a further unusual status in ACC, faint β-catenin expression was observed in the cytoplasm of carcinoma cells. Morphological distinction from a solid pseudopapillary neoplasm (SPN) of the pancreas might be problematic in such a case, because of their similarities concerned with the growth pattern and E-cadherin negativity. Without nuclear accumulation of β-catenin, a diagnosis of SPN was almost excluded. Immunoreactivity for trypsin and BCL10 made an accurate diagnosis of ACC to this case. The tumor recurred 10 months post-surgery as rapidly enlarging masses in the liver, presumably indicating the aggressiveness of the E-cadherin-negative phenotype among ACCs.
journal_name
Med Mol Morpholjournal_title
Medical molecular morphologyauthors
Tajima S,Waki M,Azuma M,Koda K,Ohata Adoi
10.1007/s00795-015-0095-2subject
Has Abstractpub_date
2016-09-01 00:00:00pages
177-81issue
3eissn
1860-1480issn
1860-1499pii
10.1007/s00795-015-0095-2journal_volume
49pub_type
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