Acinar cell carcinoma of the pancreas: Computed tomography features - A study of 15 patients

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: Evaluation of the imaging features of pathology-proven acinar cell carcinomas (ACCs) of the pancreas using computed tomography (CT). Methods: We reviewed the CT features, clinical presentations, and clinical outcomes of 15 patients (9 men, 6 women, mean age 62.3) with pathology-proven pancreatic ACCs. An abdominal radiologist retrospectively evaluated each patient's initial imaging study with respect to the lesion's size, location, attenuation (Hounsfield units) on arterial and venous phase images, peripancreatic lymphadenopathy, and distant metastases. Additional parameters studied included biliary and pancreatic ductal dilatation, intratumoral hemorrhage, calcification, the presence of cystic/necrotic components, and whether the tumor was intraparenchymal or exophytic. Results: The ACCs in this series were evenly distributed between the head/uncinate and the tail, were predominantly exophytic (73%), tended to be large (average size 5.1 cm), and were mostly hypodense to the surrounding pancreas on both the arterial and venous phase images. A sizeable proportion demonstrated a cystic or necrotic component (53%) and/or an enhancing capsule (53%). Of those lesions in the head or uncinate process, very few resulted in pancreatic (28%) or biliary (14%) ductal dilatation. None of the lesions in this series showed internal calcification or intratumoral hemorrhage. Conclusion: While a prospective diagnosis is difficult, ACCs have several features which can differentiate them from ductal adenocarcinoma, including their large size, lack of biliary or pancreatic ductal dilatation, exophytic nature, and the presence of an enhancing capsule.

Original languageEnglish (US)
Pages (from-to)137-143
Number of pages7
JournalAbdominal Imaging
Volume38
Issue number1
DOIs
StatePublished - Feb 1 2013

Keywords

  • Acinar cell carcinoma
  • Computed tomography
  • Pancreas
  • Pancreatic ductal adenocarcinoma

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Gastroenterology
  • Urology

Fingerprint Dive into the research topics of 'Acinar cell carcinoma of the pancreas: Computed tomography features - A study of 15 patients'. Together they form a unique fingerprint.

Cite this