[Intraductal mixed acinar ductal carcinoma of pancreas: report of a case].

Zhonghua Bing Li Xue Za Zhi

Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.

Published: May 2024

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http://dx.doi.org/10.3760/cma.j.cn112151-20231026-00315DOI Listing

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Article Synopsis
  • Acute pancreatitis is a significant indicator in patients with intraductal papillary mucinous neoplasms (IPMNs), as about 19.2% of patients showed this symptom, often leading to diagnosis.
  • Acute pancreatitis is linked to a higher risk of high-grade dysplasia (2.07 times more likely) and certain types of IPMNs, but it is less associated with invasive cancer (0.62 times less likely).
  • After surgical resection, 9% of patients with a history of pancreatitis experienced recurrent episodes, compared to only 0.9% in those without prior pancreatitis.
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Background: Intraductal papillary mucinous tumour (IPMN) of pancreas is increasingly recognized to have malignant potential. Fukuoka guidelines are commonly used to select patients with IPMN for resection due to high chance of malignancy, which includes high-grade dysplasia (HGD) or invasive carcinoma (IC).

Methods: A retrospective study on consecutive patients who have undergone pancreatectomy with IPMN as the final pathology was performed.

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Intraductal papillary mucinous neoplasms (IPMNs) display four histological subtypes: gastric foveolar, pancreaticobiliary, intestinal, and oncocytic. All of these subtypes harbor a different risk of cancer development. The clinical impact of these subtypes concerning the occurrence of high-grade dysplasia (HGD)/cancer (C) in specific morphological types, such as branch-duct (BD), main-duct (MD), and mixed-type (MT) IPMNs, has been less investigated.

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Purpose: To compare mammography, breast ultrasound (US), high-resolution diffusion-weighted magnetic resonance imaging (DW-MRI), dynamic contrast-enhanced breast MRI (DCE-MRI), and their combinations for detecting clinically occult early breast cancers (EBCs), including ductal carcinoma in situ (DCIS).

Methods: Three hundred and three consecutive women with screening imaging-detected early breast cancers (60 pure DCIS, 36 DCIS with microinvasion, and 207 invasive carcinoma less than 20 mm) who underwent breast MRI at 3 T including DW-MRI (b-values of 0, 800 and 1200 s/mm; in-plane resolution, 1.1 × 1.

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