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pancreatic hepatoid carcinoma

Tuesday 9 January 2007

Hepatoid adenocarcinomas are tumors that display, at least focally, cytologic and/or architectural features of hepatocellular carcinoma. They have been described in several organs, most notably in the stomach and ovary and in the pancreas.

Synopsis

- monotonous, small-to-medium sized tumor cells with round nuclei and finely granular chromatin
- more atypical tumor cells displaying larger nuclei with coarse clumped chromatin, prominent nucleoli, and moderate amounts of foamy cytoplasm
- poorly differentiated pancreatic endocrine carcinoma associated with well-defined islands of larger tumor cells growing in a perisinusoidal pattern

Differential diagnosis

- pancreatic tumors composed of large eosinophilic cells

References

- Hameed O, Xu H, Saddeghi S, Maluf H. Hepatoid carcinoma of the pancreas: a case report and literature review of a heterogeneous group of tumors. Am J Surg Pathol. 2007 Jan;31(1):146-52. PMID: 17197931