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Ormond, David Ryan

0000-0001-7027-2915

Mayo Clinic

University of Colorado Anschutz

Citations 2

Congress of Neurological Surgeons Systematic Review and Evidence-Based Guidelines for the Role of Radiosurgery for Patients With Functioning Pituitary Adenomas
Green, Sheryl , Lehrer, Eric J. , Sheehan, Jason , Cifarelli, Christopher P. , Recinos, Pablo F. , Ziu, Mateo , Ormond, David Ryan , Germano, Isabelle M.

Neurosurgery | August 15, 2025 | Volume: 97 | Issue: 3S | Pages: S36-S43

10.1227/neu.0000000000003582 Get It

BACKGROUND: Patients with functioning pituitary adenomas (FPA) require a multidisciplinary team-based approach to select best medical, surgical, and radiation treatments, including stereotactic radiosurgery (SRS). OBJECTIVE: The aim of this study was to provide evidence-based recommendations on the use of SRS for adult patients with FPA. METHODS: PubMed and Embase were searched from data base inception to June 8, 2021. Full-text articles were then screened using published exclusion/inclusion criteria. Evidence tables were developing based on data extraction from the full-text reviews, and evidence-based recommendations were finalized. RESULTS: Of the total 1842 abstracts pertinent to this topic, 343 full articles met eligibility. Of these, 21 met entry criteria and were included in the evidence tables. The provided Class III evidence supported 2 Level III recommendations: 1. SRS, hypofractionated SRS, fractionated (>5 fractions) radiotherapy, and conventional radiation therapy provide excellent radiographic control with variable hormonal reduction and endocrine remission rates. For SRS and fractionated radiotherapy hormonal reduction may continue for up to 10 years after treatment. 2. Clinicians may continue to administer endocrine suppressive medical treatment before SRS as this may not affect radiographic control. CONCLUSION: This systematic review provides evidence-based recommendations to guide providers caring for adult patients with FPA when making decisions pertinent to radiosurgery. The CNS Guidelines Committee will continue to pursue timely updates to further improve the care of patients with this diagnosis.
Congress of Neurological Surgeons Systematic Review and Evidence-Based Guidelines on the Management of Progressive Glioblastoma in Adults: Update of the 2014 Guidelines
Patrick, Hayes H. , Goodman, Abigail , Germano, Isabelle M. , Johnson, Derek R. , Ziu, Mateo , Ormond, David Ryan , Olson, Jeffrey J.

Neurosurgery | April 15, 2022 | Volume: 90 | Issue: 5 | Pages: e112-e115

10.1227/neu.0000000000001903 Get It

BACKGROUND: The Institute of Medicine best practice recommendation to review guidelines every 5 years is followed by the Congress of Neurological Surgeons Guidelines Committee. The aim of this work was to provide an updated literature review and evidence-based recommendations on the topic of diagnosis and treatment of patients with progressive glioblastoma (pGBM). OBJECTIVE: To review the literature published since the last guidelines on pGBM dated 2014, with literature search ending in June 2012. METHODS: PubMed, Embase, and Cochrane were searched for the period July 1, 2012, to March 31, 2019, using search terms and search strategies to identify pertinent abstracts. These were then screened using published exclusion/inclusion criteria to identify full-text review articles. Evidence tables were constructed using data derived from full-text reviews and recommendations made from the evidence derived. RESULTS: From the total 8786 abstracts identified by the search, 237 full-text articles met inclusion/exclusion criteria and were included in this update. Two new level II recommendations derived from this work. For the diagnosis of patients with GBM, the use of diffusion-weighted images is recommended to be included in the magnetic resonance images with and without contrast used for surveillance to detect pGBM. For the treatment of patients with pGBM, repeat cytoreductive surgery is recommended to improve overall survival. An additional 21 level III recommendations were provided. CONCLUSION: Recent published literature provides new recommendations for the diagnosis and treatment of pGBM. The Central Nervous System Guidelines Committee will continue to pursue timely updates to further improve the care of patients with diagnosis. https://www.cns.org/guidelines/browse-guidelines-detail/guidelines-management-of-progressive-glioblastoma