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Morani AC, Hanafy AK, Ramani NS, Katabathina VS, Yedururi S, Dasyam AK, Prasad SR. Hereditary and Sporadic Pancreatic Ductal Adenocarcinoma: Current Update on Genetics and Imaging. Radiol Imaging Cancer 2020; 2:e190020. [PMID: 33778702 DOI: 10.1148/rycan.2020190020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 08/08/2019] [Accepted: 08/22/2019] [Indexed: 12/12/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a genetically heterogeneous, biologically aggressive malignancy with a uniformly poor prognosis. While most pancreatic cancers arise sporadically, a small subset of PDACs develop in patients with hereditary and familial predisposition. Detailed studies of the rare hereditary syndromes have led to identification of specific genetic abnormalities that contribute to malignancy. For example, germline mutations involving BRCA1, BRCA2, PRSS1, and mismatch repair genes predispose patients to PDAC. While patients with Lynch syndrome develop a rare "medullary" variant of adenocarcinoma, intraductal papillary mucinous tumors are observed in patients with McCune-Albright syndrome. It is now well established that PDACs originate via a multistep progression from microscopic and macroscopic precursors due to cumulative genetic abnormalities. Improved knowledge of tumor genetics and oncologic pathways has contributed to a better understanding of tumor biology with attendant implications on diagnosis, management, and prognosis. In this article, the genetic landscape of PDAC and its precursors will be described, the hereditary syndromes that predispose to PDAC will be reviewed, and the current role of imaging in screening and staging assessment, as well as the potential role of molecular tumor-targeted imaging for evaluation of patients with PDAC and its precursors, will be discussed. Keywords: Abdomen/GI, Genetic Defects, Oncology, Pancreas Supplemental material is available for this article. © RSNA, 2020.
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Affiliation(s)
- Ajaykumar C Morani
- Departments of Diagnostic Radiology (A.C.M., A.K.H., S.Y., S.R.P.) and Pathology (N.S.R.), The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1473, Houston, TX 77030-4009; Department of Radiology, University of Texas at San Antonio, San Antonio, Tex (V.S.K.); and Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (A.K.D.)
| | - Abdelrahman K Hanafy
- Departments of Diagnostic Radiology (A.C.M., A.K.H., S.Y., S.R.P.) and Pathology (N.S.R.), The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1473, Houston, TX 77030-4009; Department of Radiology, University of Texas at San Antonio, San Antonio, Tex (V.S.K.); and Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (A.K.D.)
| | - Nisha S Ramani
- Departments of Diagnostic Radiology (A.C.M., A.K.H., S.Y., S.R.P.) and Pathology (N.S.R.), The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1473, Houston, TX 77030-4009; Department of Radiology, University of Texas at San Antonio, San Antonio, Tex (V.S.K.); and Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (A.K.D.)
| | - Venkata S Katabathina
- Departments of Diagnostic Radiology (A.C.M., A.K.H., S.Y., S.R.P.) and Pathology (N.S.R.), The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1473, Houston, TX 77030-4009; Department of Radiology, University of Texas at San Antonio, San Antonio, Tex (V.S.K.); and Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (A.K.D.)
| | - Sireesha Yedururi
- Departments of Diagnostic Radiology (A.C.M., A.K.H., S.Y., S.R.P.) and Pathology (N.S.R.), The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1473, Houston, TX 77030-4009; Department of Radiology, University of Texas at San Antonio, San Antonio, Tex (V.S.K.); and Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (A.K.D.)
| | - Anil K Dasyam
- Departments of Diagnostic Radiology (A.C.M., A.K.H., S.Y., S.R.P.) and Pathology (N.S.R.), The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1473, Houston, TX 77030-4009; Department of Radiology, University of Texas at San Antonio, San Antonio, Tex (V.S.K.); and Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (A.K.D.)
| | - Srinivasa R Prasad
- Departments of Diagnostic Radiology (A.C.M., A.K.H., S.Y., S.R.P.) and Pathology (N.S.R.), The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1473, Houston, TX 77030-4009; Department of Radiology, University of Texas at San Antonio, San Antonio, Tex (V.S.K.); and Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (A.K.D.)
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