Pancreatic lipoma with a solid nodule mimicking invasion from adjoining intraductal papillary mucinous neoplasm

Yoko Namiki, MD; Eriko Maeda, MD, PhD; Wataru Gonoi, MD, PhD; Nobuhisa Akamatsu, MD, PhD; Masako Ikemura, MD, PhD; Kuni Ohtomo, MD, PhD

doi:10.1016/j.radcr.2016.02.017

Radiology Case Reports (Jun 2016)

Pancreatic lipoma with a solid nodule mimicking invasion from adjoining intraductal papillary mucinous neoplasm

Yoko Namiki, MD,
Eriko Maeda, MD, PhD,
Wataru Gonoi, MD, PhD,
Nobuhisa Akamatsu, MD, PhD,
Masako Ikemura, MD, PhD,
Kuni Ohtomo, MD, PhD

Affiliations

Yoko Namiki, MD: Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
Eriko Maeda, MD, PhD: Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
Wataru Gonoi, MD, PhD: Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
Nobuhisa Akamatsu, MD, PhD: Department of Hepatobiliary Surgery, Artificial Organ and Transplantation, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
Masako Ikemura, MD, PhD: Department of Pathology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
Kuni Ohtomo, MD, PhD: Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan

DOI: https://doi.org/10.1016/j.radcr.2016.02.017
Journal volume & issue: Vol. 11, no. 2
pp. 50 – 53

Abstract

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A 74-year-old man was referred to our hospital for a mass in the pancreatic head found during screening chest computed tomography. Contrast computed tomography showed a 5-cm multicystic mass with an irregular border containing a solid component showing contrast enhancement. Caudal to this mass, a 5-cm solid mass of fat density with a nodular soft-tissue component was found. Cytology of the aspirated pancreatic fluid revealed malignant cells, and surgery was performed for suspected intraductal papillary mucinous carcinoma. Pathologic analysis of the resected specimen revealed a collision tumor of intraductal papillary mucinous neoplasm (IPMN) with high-grade dysplasia and pancreatic lipoma. The soft-tissue component within the lipoma was a nodule consisting of pancreatic tissue with inflammatory infiltration and hyalinization and was not associated with IPMN invasion.

Published in Radiology Case Reports

ISSN: 1930-0433 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Medicine (General): Medical physics. Medical radiology. Nuclear medicine
Website: https://www.sciencedirect.com/journal/radiology-case-reports

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