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Pancreatic Neoplasms: HELP
Articles by Jeanne M. Horowitz
Based on 2 articles published since 2009
(Why 2 articles?)

Between 2009 and 2019, Jeanne M. Horowitz wrote the following 2 articles about Pancreatic Neoplasms.
+ Citations + Abstracts
1 Guideline ACR Appropriateness Criteria 2017

Anonymous7930925 / Qayyum, Aliya / Tamm, Eric P / Kamel, Ihab R / Allen, Peter J / Arif-Tiwari, Hina / Chernyak, Victoria / Gonda, Tamas A / Grajo, Joseph R / Hindman, Nicole M / Horowitz, Jeanne M / Kaur, Harmeet / McNamara, Michelle M / Noto, Richard B / Srivastava, Pavan K / Lalani, Tasneem. ·Principal Author, University of Texas MD Anderson Cancer Center, Houston, Texas. Electronic address: aqayyum@mdanderson.org. · Research Author, University of Texas MD Anderson Cancer Center, Houston, Texas. · Panel Chair, Johns Hopkins University School of Medicine, Baltimore, Maryland. · Memorial Sloan Kettering Cancer Center, New York, New York; American College of Surgeons. · University of Arizona, Banner University Medical Center, Tucson, Arizona. · Montefiore Medical Center, Bronx, New York. · Columbia University, New York, New York; American Gastroenterological Association. · University of Florida College of Medicine, Gainesville, Florida. · New York University Medical Center, New York, New York. · Northwestern University, Chicago, Illinois. · University of Texas MD Anderson Cancer Center, Houston, Texas. · University of Alabama Medical Center, Birmingham, Alabama. · The Warren Alpert School of Medicine at Brown University, Providence, Rhode Island. · University of Illinois College of Medicine, Chicago, Illinois; American College of Physicians. · Specialty Chair, University of Washington, Seattle, Washington. ·J Am Coll Radiol · Pubmed #29101993.

ABSTRACT: Pancreatic adenocarcinoma is associated with poor overall prognosis. Complete surgical resection is the only possible option for cure. As such, increasingly complex surgical techniques including sophisticated vascular reconstruction are being used. Continued advances in surgical techniques, in conjunction with use of combination systemic therapies, and radiation therapy have been suggested to improve outcomes. A key aspect to surgical success is reporting of pivotal findings beyond absence of distant metastases, such as tumor size, location, and degree of tumor involvement of specific vessels associated with potential perineural tumor spread. Multiphase contrast-enhanced multidetector CT and MRI are the imaging modalities of choice for pretreatment staging and presurgical determination of resectability. Imaging modalities such as endoscopic ultrasound and fluorine-18-2-fluoro-2-deoxy-D-glucose imaging with PET/CT are indicated for specific scenarios such as biopsy guidance and confirmation of distant metastases, respectively. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.

2 Article Diffusion-weighted magnetic resonance imaging of pancreatic adenocarcinomas: association with histopathology and tumor grade. 2011

Wang, Yi / Chen, Zongming E / Nikolaidis, Paul / McCarthy, Robert J / Merrick, Laura / Sternick, Laura A / Horowitz, Jeanne M / Yaghmai, Vahid / Miller, Frank H. ·Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA. ·J Magn Reson Imaging · Pubmed #21182131.

ABSTRACT: PURPOSE: To evaluate the utility of diffusion-weighted magnetic resonance imaging (DWI) in pancreatic ductal adenocarcinoma with various grades of differentiation. MATERIALS AND METHODS: Following Institutional Review Board (IRB) approval, 21 consecutive patients with surgical pathology-proven pancreatic adenocarcinomas were retrospectively evaluated. Histopathologic characteristics and grades of differentiation of adenocarcinomas were analyzed. Twenty-one patients without a known history of pancreatic disease were evaluated as the control group. Anatomic MR images and DW images were acquired using 1.5-T MR systems. DWI with b values of 0 and 500 sec/mm² were performed on both patients and control groups. The difference in mean apparent diffusion coefficient (ADC) values among groups of normal pancreatic parenchyma, adenocarcinomas with poor differentiation, and adenocarcinomas with well/moderate differentiation were compared using one-way analysis of variance. RESULTS: Mean ADCs of pancreatic adenocarcinomas (1.77 ± 0.45 × 10⁻³ mm²/sec) was not significantly lower than that of normal parenchyma (1.98 ± 0.31) (P = 0.09). When adenocarcinomas were subdivided based on grades of differentiation, however, poorly differentiated adenocarcinoma with histopathologic characteristics of limited glandular formation and dense fibrosis had significantly lower ADCs (1.46 ± 0.17) compared to those of well/moderately differentiated adenocarcinomas (2.10 ± 0.42) characterized by neoplastic tubular structures (P < 0.01). Well/moderately differentiated adenocarcinomas with dense fibrosis showed significantly lower ADC values (1.49 ± 0.19) than those with loose fibrosis (2.26 ± 0.30) (P = 0.01). CONCLUSION: Difference in ADC values using DWI between poorly and well/moderately differentiated pancreatic ductal adenocarcinoma may relate to differences in glandular formation and density of fibrosis.