Pick Topic
Review Topic
List Experts
Examine Expert
Save Expert
  Site Guide ··   
Pancreatic Neoplasms: HELP
Articles by Aliya Qayyum
Based on 6 articles published since 2008
||||

Between 2008 and 2019, Aliya Qayyum wrote the following 6 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 Review Current update on primary pancreatic lymphoma. 2016

Anand, Deepa / Lall, Chandana / Bhosale, Priya / Ganeshan, Dhakshinamoorthy / Qayyum, Aliya. ·Abdominal Imaging, Department of Diagnostic Radiology, University of Texas MD Anderson Cancer Center, Pickens Academic Tower, 1400 Pressler Street, Unit 1473, Houston, TX, 77030-4009, USA. adeepa003@gmail.com. · Abdominal Imaging, Department of Radiology, University of California, Irvine, 101 The City Dr South Suite 0115, Orange, CA, 92868, USA. · Abdominal Imaging, Department of Diagnostic Radiology, University of Texas MD Anderson Cancer Center, Pickens Academic Tower, 1400 Pressler Street, Unit 1473, Houston, TX, 77030-4009, USA. · Abdominal Imaging, Department of Diagnostic Radiology, University of Texas MD Anderson Cancer Center, Pickens Academic Tower, 1400 Pressler Street, Unit 1473, Houston, TX, 77030-4009, USA. dganeshan@mdanderson.org. ·Abdom Radiol (NY) · Pubmed #26830418.

ABSTRACT: OBJECTIVE: This article reviews the computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) CT findings of primary and secondary pancreatic lymphomas and discusses the role of endoscopic ultrasound-guided fine needle aspiration in diagnosis and management. CONCLUSION: Pancreatic lymphoma has certain characteristic imaging features which may help distinguish it from the more common pancreatic adenocarcinoma. It is critical to make an accurate diagnosis, as the management of these two conditions is vastly different.

3 Review Pancreatic imaging mimics: part 1, imaging mimics of pancreatic adenocarcinoma. 2012

Coakley, Fergus V / Hanley-Knutson, Katryana / Mongan, John / Barajas, Ramon / Bucknor, Matthew / Qayyum, Aliya. ·Department of Radiology, University of California San Francisco, Box 0628, M-372, 505 Parnassus Ave, San Francisco, CA 94143-0628, USA. Fergus.Coakley@radiology.ucsf.edu ·AJR Am J Roentgenol · Pubmed #22826390.

ABSTRACT: OBJECTIVE: The purpose of this article is to describe the imaging features of diseases that may closely simulate pancreatic adenocarcinoma, either radiologically or pathologically. CONCLUSION: Neoplastic and inflammatory diseases that can closely simulate pancreatic adenocarcinoma include neuroendocrine tumor, metastasis to the pancreas, lymphoma, groove pancreatitis, autoimmune pancreatitis, and focal chronic pancreatitis. Atypical imaging findings that should suggest diagnoses other than adenocarcinoma include the absence of significant duct dilatation, incidental detection, hypervascularity, large size (> 5 cm), IV tumor thrombus, and intralesional ducts or cysts.

4 Article Dual-energy CT of pancreatic adenocarcinoma: reproducibility of primary tumor measurements and assessment of tumor conspicuity and margin sharpness. 2016

Gupta, Shiva / Wagner-Bartak, Nicolaus / Jensen, Corey T / Hui, Anthony / Wei, Wei / Lertdilok, Patrick / Qayyum, Aliya / Tamm, Eric P. ·Department of Diagnostic Radiology, Unit 1473, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA. sgupta6@mdanderson.org. · Department of Diagnostic Radiology, Unit 1473, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA. · The Pennsylvania State University, 201 Old Main, University Park, PA, 16802, USA. · Department of Biostatistics, University of Texas MD Anderson Cancer Center, 1400 Pressler Street, Houston, TX, 77040-4008, USA. · Women's Radiology Associates, LLP, The Woman's Hospital of Texas, 7600 Fannin Street, Houston, TX, 77054, USA. ·Abdom Radiol (NY) · Pubmed #26956643.

ABSTRACT: PURPOSE: To determine the inter- and intra-reader agreement of size, conspicuity, and margin sharpness of pancreatic adenocarcinoma on monochromatic, polychromatic, and iodine map dual-energy CT (DECT) images. METHODS: Retrospective review of DECT images from 61 patients with untreated pancreatic adenocarcinoma was performed by three radiologists independently. Pancreatic parenchymal phase images were generated as 50 and 70 keV, 140 kVp quality control (QC), and iodine map images. These were analyzed in a blinded randomized order during four reading sessions separated by 5-7 days. For each image set, readers recorded the longest axial and perpendicular primary tumor dimensions, and qualitatively scored tumor conspicuity and edge sharpness on 5-point scales. Linear mixed model was used to estimate and compare tumor measurements, tumor conspicuity, and tumor edge sharpness scores between readers and image sets. Kappa statistics were used to determine inter-observer agreement for tumor conspicuity and edge sharpness. RESULTS: The range of tumor measures (mean of longest dimension ± standard deviation) was 3.18 ± 1.41 to 3.83 ± 1.57 cm. Reproducibility of tumor measurements was very high with mild variability (s (2) = 0.01-0.10) between readers for the different image sets. Inter-observer agreement values for tumor conspicuity (κ = 0.01-0.17) and edge sharpness (κ = 0.12-0.25) were low for all image sets, although two of three readers scored tumor conspicuity and edge sharpness higher on monochromatic and iodine map DECT images than on 140 kVp QC images (p < 0.05). CONCLUSIONS: Pancreatic adenocarcinoma measurements were highly reproducible on DECT images, and subjective reader preference trended toward monochromatic and iodine images rather than polychromatic images.

5 Article Multidetector CT detection of peritoneal metastases: evaluation of sensitivity between standard 2.5 mm axial imaging and maximum-intensity-projection (MIP) reconstructions. 2015

Jensen, Corey T / Vicens-Rodriguez, Rafael A / Wagner-Bartak, Nicolaus A / Fox, Patricia S / Faria, Silvana C / Carrion, Ivan / Qayyum, Aliya / Tamm, Eric P. ·Department of Diagnostic Radiology, The University of Texas M. D. Anderson Cancer Center, Pickens Academic Tower, 1400 Pressler Street, Unit 1473, Houston, TX, 77030-4009, USA. cjensen@mdanderson.org. · Department of Diagnostic Radiology, The University of Texas M. D. Anderson Cancer Center, Pickens Academic Tower, 1400 Pressler Street, Unit 1473, Houston, TX, 77030-4009, USA. · Department of Biostatistics, The University of Texas M. D. Anderson Cancer Center, Houston, TX, USA. · University Hospital Joan XXIII (Tarragona), Avda. Jaume Balmes, XX, X-X, Vilanova i la Geltru Barcelona, 08800, Spain. ·Abdom Imaging · Pubmed #25666971.

ABSTRACT: OBJECTIVE: Our purpose was to evaluate the sensitivity of multidetector CT for the detection of peritoneal metastases between standard 2.5 mm axial imaging and maximum-intensity-projection (MIP) reconstructions. MATERIALS AND METHODS: The Institutional Review Board approved this retrospective study and waived the need to obtain patient consent. We retrospectively identified 36 patients with pancreatic adenocarcinoma and peritoneal metastatic disease who underwent a pancreatic protocol CT examination of the abdomen and pelvis between January 2012 and January 2014. Three independent radiologists reviewed a randomized combination of standard axial (2.5 mm reconstructed thickness, 2.5 mm interval) and axial MIP reconstructions (6, 3 mm interval) over two sessions. Each reader recorded metastasis location in PACS. Subsequent consensus review by two radiologists determined the final number and size of metastases. RESULTS: The reviewers found 328 peritoneal implants in 36 patients. After accounting for the size, location, and number of lesions as well as multiple readers, a generalized estimating equations model showed that the statistical combination of MIP with standard technique significantly increased the odds of correctly identifying a lesion (OR 2.16; 95% CI 1.86-2.51; p value < 0.0001) compared to standard technique alone. MIP reconstruction as a standalone technique was less sensitive compared to standard technique alone (OR 0.81; 95% CI 0.65-0.99; p value = 0.0468). When compared to standard axial imaging, evaluation via MIP reconstructions resulted in the identification of an additional 50 (15%), 45 (14%), and 55 (17%) lesions by Readers 1-3, respectively. CONCLUSION: The axial 6 mm MIP series is complimentary in the CT evaluation of peritoneal metastases. MIP reconstruction evaluation identified a significant number of additional lesions, but is not adequate as a standalone technique for peritoneal cavity assessment.

6 Article Intra-tumoral heterogeneity of gemcitabine delivery and mass transport in human pancreatic cancer. 2014

Koay, Eugene J / Baio, Flavio E / Ondari, Alexander / Truty, Mark J / Cristini, Vittorio / Thomas, Ryan M / Chen, Rong / Chatterjee, Deyali / Kang, Ya'an / Zhang, Joy / Court, Laurence / Bhosale, Priya R / Tamm, Eric P / Qayyum, Aliya / Crane, Christopher H / Javle, Milind / Katz, Matthew H / Gottumukkala, Vijaya N / Rozner, Marc A / Shen, Haifa / Lee, Jeffrey E / Wang, Huamin / Chen, Yuling / Plunkett, William / Abbruzzese, James L / Wolff, Robert A / Maitra, Anirban / Ferrari, Mauro / Varadhachary, Gauri R / Fleming, Jason B. ·Division of Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA. Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX, USA. ·Phys Biol · Pubmed #25427073.

ABSTRACT: There is substantial heterogeneity in the clinical behavior of pancreatic cancer and in its response to therapy. Some of this variation may be due to differences in delivery of cytotoxic therapies between patients and within individual tumors. Indeed, in 12 patients with resectable pancreatic cancer, we previously demonstrated wide inter-patient variability in the delivery of gemcitabine as well as in the mass transport properties of tumors as measured by computed tomography (CT) scans. However, the variability of drug delivery and transport properties within pancreatic tumors is currently unknown. Here, we analyzed regional measurements of gemcitabine DNA incorporation in the tumors of the same 12 patients to understand the degree of intra-tumoral heterogeneity of drug delivery. We also developed a volumetric segmentation approach to measure mass transport properties from the CT scans of these patients and tested inter-observer agreement with this new methodology. Our results demonstrate significant heterogeneity of gemcitabine delivery within individual pancreatic tumors and across the patient cohort, with gemcitabine DNA incorporation in the inner portion of the tumors ranging from 38 to 74% of the total. Similarly, the CT-derived mass transport properties of the tumors had a high degree of heterogeneity, ranging from minimal difference to almost 200% difference between inner and outer portions of the tumor. Our quantitative method to derive transport properties from CT scans demonstrated less than 5% difference in gemcitabine prediction at the average CT-derived transport value across observers. These data illustrate significant inter-patient and intra-tumoral heterogeneity in the delivery of gemcitabine, and highlight how this variability can be reproducibly accounted for using principles of mass transport. With further validation as a biophysical marker, transport properties of tumors may be useful in patient selection for therapy and prediction of therapeutic outcome.