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Pancreatic Neoplasms: HELP
Articles by Joanna K. Law
Based on 8 articles published since 2010
(Why 8 articles?)

Between 2010 and 2020, Joanna K. Law wrote the following 8 articles about Pancreatic Neoplasms.
+ Citations + Abstracts
1 Review A systematic review of solid-pseudopapillary neoplasms: are these rare lesions? 2014

Law, Joanna K / Ahmed, Aadil / Singh, Vikesh K / Akshintala, Venkata S / Olson, Matthew T / Raman, Siva P / Ali, Syed Z / Fishman, Elliot K / Kamel, Ihab / Canto, Marcia I / Dal Molin, Marco / Moran, Robert A / Khashab, Mouen A / Ahuja, Nita / Goggins, Michael / Hruban, Ralph H / Wolfgang, Christopher L / Lennon, Anne Marie. ·From the *Division of Gastroenterology, †Department of Pathology, ‡Department of Radiology, Johns Hopkins University School of Medicine, §Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, and ∥Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD. ·Pancreas · Pubmed #24622060.

ABSTRACT: OBJECTIVE: The aim of the study was to determine if there had been any change in the number of solid-pseudopapillary neoplasm (SPN) cases detected and their evaluation or management over time. METHODS: A systematic review of SPN was performed of all articles published in English in PubMed and Scopus. RESULTS: A total of 2744 patients with SPN were identified in 484 studies published between 1961 and 2012; 87.8% of the cases were reported between 2000 and 2012. A total of 2408 (87.8%) were females, and the mean age was 28.5 (SD, 13.7) years. The most common symptom was abdominal pain in 63.6% of the cases and incidentally detected in 38.1% of the cases. There were 2285 patients who underwent pancreatic resection. The mean tumor size was 8.6 (SD, 4.3) cm. Follow-up was reported for 1952 (90.5%) patients, with a mean follow-up of 36.1 (SD, 32.8) months. Disease-free survival was documented in 1866 (95.6%) patients with recurrence in 86 (4.4%) patients; the median time to recurrence was 50.5 months. CONCLUSIONS: The number of SPNs reported in the literature has seen a 7-fold increase in the number of cases reported since 2000 compared with before. Solid-pseudopapillary neoplasms continue to be primarily found in young women and present with nonspecific symptoms. Surgery remains the mainstay of treatment with an excellent long-term prognosis.

2 Review Management of pancreatic cysts: a multidisciplinary approach. 2013

Law, Joanna K / Hruban, Ralph H / Lennon, Anne Marie. ·Division of Gastroenterology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA. ·Curr Opin Gastroenterol · Pubmed #23872487.

ABSTRACT: PURPOSE OF REVIEW: An increasing number of patients are being diagnosed with pancreatic cysts. Pancreatic cysts are best evaluated by a team of healthcare professionals that includes gastroenterologists, surgeons, radiologists, pathologists, oncologists and geneticists. RECENT FINDINGS: The international consensus guidelines for the management of intraductal papillary mucinous neoplasm (IPMN) and mucinous cystic neoplasm were updated in 2012, incorporating research that had been reported over a 5-year span since the publication of the previous guidelines. There are significant changes in the new guidelines, which include redefining main duct IPMN and removing the recommendation for surgical resection based on size alone. In addition, the discovery of molecular markers of cyst type promises to revolutionize the way patients are diagnosed and managed. SUMMARY: The diagnosis and management of patients with pancreatic cysts have progressed significantly in recent years. Large prospective, multicenter trials are now needed to validate the new international consensus guidelines and to assess the accuracy of new molecular markers.

3 Article A novel approach for selecting combination clinical markers of pathology applied to a large retrospective cohort of surgically resected pancreatic cysts. 2017

Masica, David L / Dal Molin, Marco / Wolfgang, Christopher L / Tomita, Tyler / Ostovaneh, Mohammad R / Blackford, Amanda / Moran, Robert A / Law, Joanna K / Barkley, Thomas / Goggins, Michael / Irene Canto, Marcia / Pittman, Meredith / Eshleman, James R / Ali, Syed Z / Fishman, Elliot K / Kamel, Ihab R / Raman, Siva P / Zaheer, Atif / Ahuja, Nita / Makary, Martin A / Weiss, Matthew J / Hirose, Kenzo / Cameron, John L / Rezaee, Neda / He, Jin / Joon Ahn, Young / Wu, Wenchuan / Wang, Yuxuan / Springer, Simeon / Diaz, Luis L / Papadopoulos, Nickolas / Hruban, Ralph H / Kinzler, Kenneth W / Vogelstein, Bert / Karchin, Rachel / Lennon, Anne Marie. ·*Drs Masica and Dal Molin contributed equally as first authors. · Department of Biomedical Engineering and the Institute for Computational Medicine, The Johns Hopkins University, Baltimore, Maryland. · Departments of the Sol Goldman Pancreatic Cancer Research Center. · Departments of Pathology. · Departments of Surgery. · Departments of Oncology. · Departments of Medicine. · Departments of Biostatistics and Bioinformatics. · Departments of the Ludwig Center and Howard Hughes Medical Institute at the Sidney Kimmel Cancer Center, The Johns Hopkins Medical Institutions, Baltimore, Maryland. · Departments of Radiology. · †Drs Lennon and Karchin contributed equally as senior authors amlennon@jhmi.edu karchin@jhu.edu. ·J Am Med Inform Assoc · Pubmed #27330075.

ABSTRACT: OBJECTIVE: Our objective was to develop an approach for selecting combinatorial markers of pathology from diverse clinical data types. We demonstrate this approach on the problem of pancreatic cyst classification. MATERIALS AND METHODS: We analyzed 1026 patients with surgically resected pancreatic cysts, comprising 584 intraductal papillary mucinous neoplasms, 332 serous cystadenomas, 78 mucinous cystic neoplasms, and 42 solid-pseudopapillary neoplasms. To derive optimal markers for cyst classification from the preoperative clinical and radiological data, we developed a statistical approach for combining any number of categorical, dichotomous, or continuous-valued clinical parameters into individual predictors of pathology. The approach is unbiased and statistically rigorous. Millions of feature combinations were tested using 10-fold cross-validation, and the most informative features were validated in an independent cohort of 130 patients with surgically resected pancreatic cysts. RESULTS: We identified combinatorial clinical markers that classified serous cystadenomas with 95% sensitivity and 83% specificity; solid-pseudopapillary neoplasms with 89% sensitivity and 86% specificity; mucinous cystic neoplasms with 91% sensitivity and 83% specificity; and intraductal papillary mucinous neoplasms with 94% sensitivity and 90% specificity. No individual features were as accurate as the combination markers. We further validated these combinatorial markers on an independent cohort of 130 pancreatic cysts, and achieved high and well-balanced accuracies. Overall sensitivity and specificity for identifying patients requiring surgical resection was 84% and 81%, respectively. CONCLUSIONS: Our approach identified combinatorial markers for pancreatic cyst classification that had improved performance relative to the individual features they comprise. In principle, this approach can be applied to any clinical dataset comprising dichotomous, categorical, and continuous-valued parameters.

4 Article Liver transplant patients have a risk of progression similar to that of sporadic patients with branch duct intraductal papillary mucinous neoplasms. 2014

Lennon, Anne Marie / Victor, David / Zaheer, Atif / Ostovaneh, Mohammad Reza / Jeh, Jessica / Law, Joanna K / Rezaee, Neda / Molin, Marco Dal / Ahn, Young Joon / Wu, Wenchuan / Khashab, Mouen A / Girotra, Mohit / Ahuja, Nita / Makary, Martin A / Weiss, Matthew J / Hirose, Kenzo / Goggins, Michael / Hruban, Ralph H / Cameron, Andrew / Wolfgang, Christopher L / Singh, Vikesh K / Gurakar, Ahmet. ·Division of Gastroenterology and Hepatology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins Medical Institutions, Baltimore, MD; Division of Surgery, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins Medical Institutions, Baltimore, MD. ·Liver Transpl · Pubmed #25155689.

ABSTRACT: Intraductal papillary mucinous neoplasms (IPMNs) have malignant potential and can progress from low- to high-grade dysplasia to invasive adenocarcinoma. The management of patients with IPMNs is dependent on their risk of malignant progression, with surgical resection recommended for patients with branch-duct IPMN (BD-IPMN) who develop high-risk features. There is increasing evidence that liver transplant (LT) patients are at increased risk of extrahepatic malignancy. However, there are few data regarding the risk of progression of BD-IPMNs in LT recipients. The aim of this study was to determine whether LT recipients with BD-IPMNs are at higher risk of developing high-risk features than patients with BD-IPMNs who did not receive a transplant. Consecutive patients who underwent an LT with BD-IPMNs were included. Patients with BD-IPMNs with no history of immunosuppression were used as controls. Progression of the BD-IPMNs was defined as development of a high-risk feature (jaundice, dilated main pancreatic duct, mural nodule, cytology suspicious or diagnostic for malignancy, cyst diameter ≥3 cm). Twenty-three LT patients with BD-IPMN were compared with 274 control patients. The median length of follow-up was 53.7 and 24.0 months in LT and control groups, respectively. Four (17.4%) LT patients and 45 (16.4%) controls developed high-risk features (P = 0.99). In multivariate analysis, progression of BD-IPMNs was associated with age at diagnosis but not with LT. There was no statistically significant difference in the risk of developing high-risk features between the LT and the control groups.

5 Article Concomitant pancreatic adenocarcinoma in a patient with branch-duct intraductal papillary mucinous neoplasm. 2014

Law, Joanna K / Wolfgang, Christopher L / Weiss, Matthew J / Lennon, Anne Marie. ·Joanna K Law, Christopher L Wolfgang, Matthew J Weiss, Anne Marie Lennon, Division of Gastroenterology, Johns Hopkins Hospital, Baltimore, MD 21287, United States. ·World J Gastroenterol · Pubmed #25083095.

ABSTRACT: Branch duct intraductal papillary mucinous neoplasms (BD-IPMN) are pre-malignant pancreatic cystic lesions which carry a small risk of malignant transformation within the cyst. Guidelines exist with respect to surveillance of the cysts using computed tomography, magnetic resonance imaging, and/or endoscopic ultrasound (EUS). There are reports that patients with IPMNs are at increased risk of developing pancreatic adenocarcinoma, which arises in an area separate to the IPMNs. We present two cases of pancreatic adenocarcinoma arising within the parenchyma, distinct from the IPMN-associated cyst, identified with EUS. This case report highlights that patients with BD-IPMN are at increased risk for pancreatic adenocarcinoma separate from the cyst and also the importance for endosonographers to carefully survey the rest of the pancreatic parenchyma separate from the cyst in order to identify small pancreatic adenocarcinomas.

6 Article Endoscopic ultrasound-guided fine needle aspiration improves the pre-operative diagnostic yield of solid-pseudopapillary neoplasm of the pancreas: an international multicenter case series (with video). 2014

Law, Joanna K / Stoita, Alina / Wever, Wallia / Gleeson, Ferga C / Dries, Andrew M / Blackford, Amanda / Kiswani, Vandhana / Shin, Eun Ji / Khashab, Mouen A / Canto, Marcia Irene / Singh, Vikesh K / Lennon, Anne Marie. ·Division of Gastroenterology and Hepatology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins Medical Institutions, 1800 Orleans St, Suite 7125 J, Baltimore, MD, 21205, USA, jlaw8@jhmi.edu. ·Surg Endosc · Pubmed #24718662.

ABSTRACT: BACKGROUND/OBJECTIVES: Solid-pseudopapillary neoplasms (SPNs) are rare pancreatic tumors, which occur most frequently in young women and are associated with an excellent prognosis. Computed tomography (CT) is used most commonly to identify these lesions, but there are few studies evaluating the role of endoscopic ultrasound (EUS) and fine needle aspiration (EUS-FNA) in the assessment of SPN. The aim of the study was to determine the incremental diagnostic yield of EUS-FNA compared with CT or EUS in the evaluation of patients with SPN. METHODS: A retrospective chart review of consecutive patients diagnosed with SPN who underwent CT, EUS, and EUS-FNA at five centers from three countries from 1998 to 2013. Patient demographics, imaging, endoscopic studies, cytopathology, and histology were reviewed. RESULTS: Thirty-four patients were identified with SPN. There were 31 (91.2 %) females, with a mean age at diagnosis of 37 years (range 16-81). The most common presenting symptom was abdominal pain which was present in 59 %. SPNs were incidentally detected in 14 (41.2 %) of the patients. The median tumor size was 4.2 cm (range 1.9-9.4). No patient had evidence of local or distant metastases. The most common appearance on EUS was of a mixed solid-cystic lesion (67.6 %). The diagnostic yield of CT and EUS alone was 23.5 and 41.2 %, respectively. CT and EUS combined had a diagnostic yield of 52.9 %. The addition of EUS-FNA significantly increased the diagnostic yield to 82.4 % compared with either CT or CT and EUS (p < 0.005). There were no reported adverse events reported. CONCLUSIONS: SPNs are rare pancreatic tumors primarily affecting young women. The addition of EUS-FNA significantly increased the pre-operative diagnostic yield of SPN to 82.4 %.

7 Article Institutional experience with solid pseudopapillary neoplasms: focus on computed tomography, magnetic resonance imaging, conventional ultrasound, endoscopic ultrasound, and predictors of aggressive histology. 2013

Raman, Siva P / Kawamoto, Satomi / Law, Joanna K / Blackford, Amanda / Lennon, Anne Marie / Wolfgang, Christopher L / Hruban, Ralph H / Cameron, John L / Fishman, Elliot K. ·From the *Department of Radiology, Johns Hopkins University; †Division of Gastroenterology, Johns Hopkins Hospital; ‡Division of Oncology Biostatistics, Johns Hopkins University School of Medicine; §Department of Surgery, Johns Hopkins University School of Medicine; and ∥The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD. ·J Comput Assist Tomogr · Pubmed #24045264.

ABSTRACT: OBJECTIVE: Solid pseudopapillary neoplasms (SPNs) are low-grade malignancies with an excellent prognosis, albeit with the potential for metastatic disease. This study details our institution's experience with the diagnosis and treatment of SPN, including clinical presentation, multimodality imaging findings, and potential predictors of aggressive tumor behavior. MATERIALS AND METHODS: The institutional pathology database was searched through for all cases of SPN since 1988, yielding 51 patients. The electronic medical record was searched for clinical and demographic information regarding these patients, including age, sex, presenting symptoms, type of surgery, postoperative length of stay, tumor markers, and postsurgical follow-up. All available imaging data were reviewed, including those of 30 patients who underwent multidetector computed tomography, those of 9 patients who underwent magnetic resonance imaging (MRI), those of 3 patients who underwent conventional ultrasound, and those of 11 patients who underwent endoscopic ultrasound. RESULTS: A total of 84% of patients were females, with a mean age of only 33 years. Prognosis was excellent, with a mean follow-up of 3 years without recurrence. Only 1 of the 51 patients developed metastatic disease to the liver 8 years after the surgery. On computed tomography, lesions tended to be large (5.3 cm), well circumscribed (29/30), round/oval (20/30), and encapsulated (23/30). The lesions often demonstrated calcification (14/30) and typically resulted in no biliary or pancreatic ductal dilatation. The lesions ranged from completely cystic to completely solid. On MRI, the lesions often demonstrated a T2 hypointense or enhancing capsule (6/9) and demonstrated internal blood products (5/9). The lesions tended to be devoid of vascularity on conventional ultrasound. Ten patients were found to have "aggressive" histology at presentation (T3 tumor, nodal involvement, perineural invasion, or vascular invasion). No demographic, clinical, or multidetector computed tomographic imaging features were found to correlate with aggressive histology. CONCLUSIONS: Certain imaging features (eg, well-circumscribed mass with calcification, peripheral capsule, internal blood products, and lack of biliary/pancreatic ductal obstruction) on computed tomography and MRI are highly suggestive of the diagnosis of SPN, particularly when visualized in young female patients. However, it is not possible to predict aggressive histology on the basis of imaging findings, clinical presentation, or patient demographic features.

8 Article Endoscopic ultrasound (EUS)-guided fiducial placement allows localization of small neuroendocrine tumors during parenchymal-sparing pancreatic surgery. 2013

Law, Joanna K / Singh, Vikesh K / Khashab, Mouen A / Hruban, Ralph H / Canto, Marcia Irene / Shin, Eun Ji / Saxena, Payal / Weiss, Matthew J / Pawlik, Timothy M / Wolfgang, Christopher L / Lennon, Anne Marie. ·Division of Gastroenterology, Johns Hopkins Hospital, Baltimore, MD, USA, jlaw8@jhmi.edu. ·Surg Endosc · Pubmed #23636530.

ABSTRACT: BACKGROUND: Parenchymal-sparing pancreatic surgery is ideal for lesions such as small pancreatic neuroendocrine tumors (PanNET). However, precise localization of these small tumors at surgery can be difficult. The placement of fiducials under endoscopic ultrasound (EUS) guidance (EUS-F) has been used to direct stereotactic radiation therapy for pancreatic adenocarcinoma. This report describes two cases in which placement of fiducials was used to guide surgical resection. This study aimed to assess the feasibility, safety, and efficacy of using EUS-F for intraoperative localization of small PanNETs. METHODS: A retrospective study analyzed two consecutive patients with small PanNETs who underwent EUS-F followed by enucleation in a tertiary-care referral hospital. The following features were examined: technical success and complication rates of EUS-F, visibility of the fiducial at the time of surgery, and fiducial migration. RESULTS: In the study, EUS-F was performed for two female patients with a 7-mm and a 9-mm PanNET respectively in the uncinate process and neck of the pancreas. In both patients, EUS-F was feasible with two Visicoil fiducials (Core Oncology, Santa Barbara, CA, USA) placed either within or adjacent to the tumors using a 22-gauge Cook Echotip needle. At surgery, the fiducials were clearly visible on intraoperative ultrasound, and both the tumor and the fiducials were successfully enucleated in both cases. No complications were associated with EUS-F, and no evidence of pancreatitis was shown either clinically or on surgical pathology. This investigation had the limitations of a small single-center study. CONCLUSIONS: For patients undergoing enucleation, EUS-F is technically feasible and safe and aids intraoperative localization of small PanNETs.