Michael Ansstas

819 total citations
22 papers, 526 citations indexed

About

Michael Ansstas is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Michael Ansstas has authored 22 papers receiving a total of 526 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Surgery, 12 papers in Oncology and 11 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Michael Ansstas's work include Gallbladder and Bile Duct Disorders (8 papers), Esophageal and GI Pathology (6 papers) and Pediatric Hepatobiliary Diseases and Treatments (4 papers). Michael Ansstas is often cited by papers focused on Gallbladder and Bile Duct Disorders (8 papers), Esophageal and GI Pathology (6 papers) and Pediatric Hepatobiliary Diseases and Treatments (4 papers). Michael Ansstas collaborates with scholars based in United States and Philippines. Michael Ansstas's co-authors include Steven A. Edmundowicz, Sreenivasa S. Jonnalagadda, Gregory A. Coté, Riad R. Azar, Daniel Mullady, Dayna S. Early, Lawrence Waldbaum, Robert M. Hovis, Nitin Kumar and Neil Gupta and has published in prestigious journals such as Gastroenterology, The American Journal of Gastroenterology and Gastrointestinal Endoscopy.

In The Last Decade

Michael Ansstas

19 papers receiving 519 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Michael Ansstas United States 8 298 293 249 175 66 22 526
Masahiro Niihara Japan 15 379 1.3× 367 1.3× 98 0.4× 46 0.3× 26 0.4× 58 621
Rosa Klotz Germany 13 279 0.9× 220 0.8× 215 0.9× 67 0.4× 33 0.5× 63 553
Katherine Hagan United States 12 204 0.7× 62 0.2× 47 0.2× 62 0.4× 120 1.8× 23 384
Minoru Murayama Japan 9 166 0.6× 122 0.4× 94 0.4× 13 0.1× 19 0.3× 40 366
Francesco Sellitri Italy 9 133 0.4× 246 0.8× 63 0.3× 159 0.9× 59 0.9× 21 391
A. Marszałek South Africa 8 123 0.4× 69 0.2× 32 0.1× 58 0.3× 76 1.2× 12 302
Laurie B. Reeder United States 13 397 1.3× 421 1.4× 79 0.3× 25 0.1× 104 1.6× 15 634
Bhawna Rastogi India 13 134 0.4× 69 0.2× 22 0.1× 138 0.8× 65 1.0× 19 405
Pio Maniscalco Italy 11 123 0.4× 204 0.7× 39 0.2× 40 0.2× 20 0.3× 38 407
Terje Veel Norway 12 233 0.8× 76 0.3× 49 0.2× 26 0.1× 141 2.1× 28 422

Countries citing papers authored by Michael Ansstas

Since Specialization
Citations

This map shows the geographic impact of Michael Ansstas's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Michael Ansstas with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Michael Ansstas more than expected).

Fields of papers citing papers by Michael Ansstas

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Michael Ansstas. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Michael Ansstas. The network helps show where Michael Ansstas may publish in the future.

Co-authorship network of co-authors of Michael Ansstas

This figure shows the co-authorship network connecting the top 25 collaborators of Michael Ansstas. A scholar is included among the top collaborators of Michael Ansstas based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Michael Ansstas. Michael Ansstas is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Zhou, Alice Y., et al.. (2023). Determining PARP Inhibition as a Treatment Strategy in Melanoma Based on Homologous Recombination Deficiency–Related Loss of Heterozygosity. Journal of the National Comprehensive Cancer Network. 21(7). 688–693.e3. 8 indexed citations
2.
Zhou, Alice Y., et al.. (2023). BRAF/MEK Inhibition as a Bridge to Immunotherapy for Symptomatic BRAF V600 Melanoma Brain Metastases: A Case Series. Journal of the National Comprehensive Cancer Network. 21(10). 991–999.
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Khaddour, Karam, Michael Ansstas, & George Ansstas. (2021). Clinical outcomes and longitudinal circulating tumor DNA changes after treatment with nivolumab and olaparib in immunotherapy relapsed melanoma with detected homologous recombination deficiency. Molecular Case Studies. 7(5). a006129–a006129. 9 indexed citations
5.
Kashani, Amir, et al.. (2021). Seronegative autoimmune enteropathy with duodenal sparing and colonic clues in an adult female. Clinical Journal of Gastroenterology. 14(2). 546–550. 3 indexed citations
6.
Khaddour, Karam, Ryan C. Fields, Michael Ansstas, Ilana S. Rosman, & George Ansstas. (2020). Metachronous cutaneous squamous cell carcinoma in a young patient as the only presenting symptom to uncover Lynch syndrome with MLH1 Germline mutation. Hereditary Cancer in Clinical Practice. 18(1). 23–23. 5 indexed citations
7.
Lew, Daniel, Michael Ansstas, & Kenneth Park. (2019). Cherry pits causing colonic obstruction. Gastrointestinal Endoscopy. 91(5). 1212–1213.
8.
Ansstas, Michael, Daniel Lew, & Dayna S. Early. (2019). 457 Predictor Factors for Dilation Treatment in Stricture Due to Eosinophilic Esophagitis. The American Journal of Gastroenterology. 114(1). S268–S268.
9.
Devkota, Bishnu Prasad, Michael Ansstas, Jeffrey F. Scherrer, Joanne Salas, & Chakra Budhathoki. (2014). Internal Medicine Resident Training and Provision of Diabetes Quality of Care Indicators. Canadian Journal of Diabetes. 39(2). 133–137. 3 indexed citations
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Coté, Gregory A., Nitin Kumar, Michael Ansstas, et al.. (2010). Risk of post-ERCP pancreatitis with placement of self-expandable metallic stents. Gastrointestinal Endoscopy. 72(4). 748–754. 99 indexed citations
12.
Gupta, Neil, Dayna S. Early, Vikas Singh, et al.. (2010). S1544: Comparison of Standard Definition White Light (SD-WL), High Definition White Light (HD-WL), and Narrow Band Imaging (NBI) Colonoscopy: Impact on Surveillance Interval Recommendations. Gastrointestinal Endoscopy. 71(5). AB190–AB190. 1 indexed citations
13.
Coté, Gregory A., Christine E. Hovis, Rajesh N. Keswani, et al.. (2010). S1445: A Randomized Clinical Trial Comparing the Use of a Pancreatic Duct Stent or a Pancreatic Duct Guidewire to Facilitate Bile Duct Cannulation. Gastrointestinal Endoscopy. 71(5). AB163–AB164. 2 indexed citations
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Coté, Gregory A., Robert M. Hovis, Michael Ansstas, et al.. (2009). Incidence of Sedation-Related Complications With Propofol Use During Advanced Endoscopic Procedures. Clinical Gastroenterology and Hepatology. 8(2). 137–142. 209 indexed citations
17.
Coté, Gregory A., Michael Ansstas, Rajesh N. Keswani, et al.. (2009). Findings at endoscopic retrograde cholangiopancreatography after endoscopic treatment of postcholecystectomy bile leaks. Surgical Endoscopy. 24(7). 1752–1756. 15 indexed citations
18.
Coté, Gregory A., Michael Ansstas, Rishi Pawa, et al.. (2009). Difficult biliary cannulation: use of physician-controlled wire-guided cannulation over a pancreatic duct stent to reduce the rate of precut sphincterotomy (with video). Gastrointestinal Endoscopy. 71(2). 275–279. 33 indexed citations
19.
Coté, Gregory A., Michael Ansstas, Steven A. Edmundowicz, et al.. (2009). Endoscopic Treatment of Pancreatic Fluid Collections: Role for Debridement with a Nasocystic Drain At the Time of Initial Endoscopy. Gastrointestinal Endoscopy. 69(5). AB332–AB333. 2 indexed citations
20.
Ansstas, Michael, et al.. (2009). Difficult Biliary Cannulation: Use of Physician Controlled Wire-Guided Cannulation Over a Pancreatic Duct Stent to Reduce the Rate of Precut Sphincterotomy. Gastrointestinal Endoscopy. 69(5). AB155–AB155. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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