Rare pancreatic neoplasms and mimics of pancreatic cancer

Naoki Takahashi

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Certain histologic types of pancreatic neoplasms are encountered uncommonly. Although these tumors can have characteristic imaging features, they often are non-specific in appearance. In addition, non-neoplastic abnormalities that affect the pancreas can simulate the appearance of a pancreatic neoplasm. This chapter reviews the clinical and imaging features of rare pancreatic neoplasms and the non-neoplastic processes that can mimic pancreatic cancer. Ductal adenocarcinoma of the pancreas is the most common type of cancer that originates from the pancreas. Other less common pancreatic cancers include acinar cell carcinoma, anaplastic carcinoma, osteoclast-like giant cell tumor, mucinous non-cystic carcinoma, adenosquamous carcinoma, signet-ring cell carcinoma and small cell carcinoma [1]. Acinar cell carcinoma is a rare pancreatic tumor comprising 1% of all exocrine neoplasms, despite the fact that acinar cells make up most of the pancreatic parenchyma [2]. Acinar cell carcinomas are less aggressive and have a better prognosis than the typical ductal carcinoma of the pancreas. This tumor may produce pancreatic enzymes and occasionally may cause polyarthritis and subcutaneous fat necrosis [2]. On computed tomography, acinar cell carcinoma typically is a well-circumscribed, exophytic, low-attenuation mass that may be partially cystic or contain calcifications (Figure 11.1) [3]. Anaplastic carcinoma comprises 2–7% of all pancreatic carcinomas. On CT, the tumor typically is large, partly necrotic, locally invasive, and invariably metastatic at the time of diagnosis [4]. Small cell carcinoma comprises 1% of all pancreatic carcinomas. Histologically, it is indistinguishable from small cell carcinoma of the lung.

Original languageEnglish (US)
Title of host publicationPancreatic Cancer
PublisherCambridge University Press
Pages175-192
Number of pages18
ISBN (Electronic)9780511575440
ISBN (Print)9780521886925
DOIs
StatePublished - Jan 1 2008

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Pancreatic Neoplasms
Acinar Cell Carcinoma
Small Cell Carcinoma
Neoplasms
Carcinoma
Pancreas
Pancreatic Ductal Carcinoma
Signet Ring Cell Carcinoma
Adenosquamous Carcinoma
Fat Necrosis
Giant Cell Tumors
Acinar Cells
Subcutaneous Fat
Small Cell Lung Carcinoma
Osteoclasts
Arthritis
Adenocarcinoma
Tomography
Enzymes

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Takahashi, N. (2008). Rare pancreatic neoplasms and mimics of pancreatic cancer. In Pancreatic Cancer (pp. 175-192). Cambridge University Press. https://doi.org/10.1017/CBO9780511575440.013

Rare pancreatic neoplasms and mimics of pancreatic cancer. / Takahashi, Naoki.

Pancreatic Cancer. Cambridge University Press, 2008. p. 175-192.

Research output: Chapter in Book/Report/Conference proceedingChapter

Takahashi, N 2008, Rare pancreatic neoplasms and mimics of pancreatic cancer. in Pancreatic Cancer. Cambridge University Press, pp. 175-192. https://doi.org/10.1017/CBO9780511575440.013
Takahashi N. Rare pancreatic neoplasms and mimics of pancreatic cancer. In Pancreatic Cancer. Cambridge University Press. 2008. p. 175-192 https://doi.org/10.1017/CBO9780511575440.013
Takahashi, Naoki. / Rare pancreatic neoplasms and mimics of pancreatic cancer. Pancreatic Cancer. Cambridge University Press, 2008. pp. 175-192
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