title: Consensus statement from the International Radiosurgery Oncology Consortium for Kidney for primary renal cell carcinoma.
abstract: OBJECTIVE
  To provide a multi-institutional consensus document for stereotactic body radiotherapy of primary renal cell carcinoma.
  
  
  METHODS
  Eight international institutions completed a 65-item survey covering patient selection, planning/treatment aspects and response evaluation.
  
  
  RESULTS
  All centers treat patients with pre-existing hypertension and solitary kidneys. Five institutions apply size constraints of 5-8 cm. The total planning target volume expansion is 3-10 mm. All institutions perform pretreatment imaging verification, while seven institutions perform some form of intrafractional monitoring. Number of fractions used are 1-12 to a total dose of 25 Gy-80 GyE. Imaging follow-up for local tumor response includes computed tomography (n = 8), PET-computed tomography (n = 1) and MRI (n = 5). Follow-up frequency is 3-6 months for the first 2 years and 3-12 months for subsequent 3 years.
  
  
  CONCLUSIONS
  Key methods for safe implementation and practice for stereotactic body radiotherapy kidney have been identified and may aid standardization of treatment delivery.
authors.affiliation: Division of Radiation Oncology & Cancer Imaging, Peter MacCallum Cancer Center, East Melbourne, Australia.
authors.forename: Shankar
authors.initials: S
authors.lastname: Siva
authors.affiliation: University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center, Cleveland, OH, USA.
authors.forename: Rodney J
authors.initials: RJ
authors.lastname: Ellis
authors.affiliation: University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center, Cleveland, OH, USA.
authors.forename: Lee
authors.initials: L
authors.lastname: Ponsky
authors.affiliation: Houston Methodist Hospital, Weil Cornell Medical College, Houston, TX, USA.
authors.forename: Bin S
authors.initials: BS
authors.lastname: Teh
authors.affiliation: Beth Israel Deaconess Medical Center, Boston, MA, USA.
authors.forename: Anand
authors.initials: A
authors.lastname: Mahadevan
authors.affiliation: University of Munich Hospitals, Munich, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Muacevic
authors.affiliation: University of Munich Hospitals, Munich, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Staehler
authors.affiliation: Department of Radiology, University of Yamanashi, Yamanashi, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Onishi
authors.affiliation: Karolinska University Hospital/Karolinska Institute, Stockholm, Sweden.
authors.forename: Peter
authors.initials: P
authors.lastname: Wersall
authors.affiliation: National Institute of Radiological Sciences, Chiba, Japan.
authors.forename: Takuma
authors.initials: T
authors.lastname: Nomiya
authors.affiliation: University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center, Cleveland, OH, USA.
authors.forename: Simon S
authors.initials: SS
authors.lastname: Lo
mesh_terms: D002292:Carcinoma, Renal Cell / Q000175:diagnosis / Q000601:surgery*; D017321:Clinical Trials, Phase I as Topic; D032921:Consensus; D019468:Disease Management; D005104:Expert Testimony; D005500:Follow-Up Studies; D019538:Health Care Surveys; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis / Q000601:surgery*; D009367:Neoplasm Staging; D063868:Patient Outcome Assessment; D017410:Practice Guidelines as Topic; D010818:Practice Patterns, Physicians'; D016634:Radiosurgery / Q000379:methods; D011879:Radiotherapy Dosage; D013813:Therapy, Computer-Assisted / Q000379:methods
keywords: SABR; SBRT; ablation; kidney cancer; patterns of practice; radiotherapy; stereotactic