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AJR 2001; 177:367-371
© American Roentgen Ray Society

Original Report

Pancreatic Mass Due to Chronic Pancreatitis

Correlation of CT and MR Imaging Features with Pathologic Findings

Tonsok Kim1, Takamichi Murakami1, Manabu Takamura1, Masatoshi Hori1, Satoru Takahashi1, Shoji Nakamori2, Masato Sakon2, Yoshio Tanji3, Kenji Wakasa4 and Hironobu Nakamura1

1 Department of Radiology, D1, Osaka University Medical School. 2-2 Yamadaoka, Suita City, Osaka 565-0871, Japan.
2 Department of Surgery and Clinical Oncology, Osaka University Medical School, 2-2 Yamadaoka, Suita City, Osaka 565-0871, Japan.
3 Department of Surgical Oncology, Osaka University Medical School, Suita City, Osaka 565-0871, Japan.
4 Department of Pathology, Osaka City University Medical School, Suita City, Osaka 565-0871, Japan.

OBJECTIVE. The purpose of this study was to identify helical CT and MR imaging features of pancreatic masses (focal enlargement) due to chronic pancreatitis and their correlation with pathologic findings.

CONCLUSION. When histologic fibrosis is uniformly present through the pancreas in patients with chronic pancreatitis, there is no demarcation of masses due to chronic pancreatitis. When there is a greater degree of histologic fibrosis in the masslike part of the pancreas, the mass is often demarcated from the remaining pancreas, and the enhancement pattern on two-phase helical CT and dynamic gadolinium-enhanced MR imaging mimics that of pancreatic adenocarcinoma.


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