title: Evaluation of the indications for performing magnetic resonance imaging of the female pelvis at a referral center for cancer, according to the American College of Radiology criteria.
abstract: OBJECTIVE
  To evaluate the indications for performing magnetic resonance imaging of the female pelvis at a referral center for cancer.
  
  
  METHODS
  This was a retrospective, single-center study, conducted by reviewing medical records and imaging reports. We included 1060 female patients who underwent magnetic resonance imaging of the pelvis at a cancer center between January 2013 and June 2014. The indications for performing the examination were classified according to the American College of Radiology (ACR) criteria.
  
  
  RESULTS
  The mean age of the patients was 52.6 ± 14.8 years, and 49.8% were perimenopausal or postmenopausal. The majority (63.9%) had a history of cancer, which was gynecologic in 29.5% and nongynecologic in 34.4%. Of the patients evaluated, 44.0% had clinical complaints, the most common being pelvic pain (in 11.5%) and bleeding (in 9.8%), and 34.7% of patients had previously had abnormal findings on ultrasound. Most (76.7%) of the patients met the criteria for undergoing magnetic resonance imaging, according to the ACR guidelines. The main indications were evaluation of tumor recurrence after surgical resection (in 25.9%); detection and staging of gynecologic neoplasms (in 23.3%); and evaluation of pelvic pain or of a mass (in 17.1%).
  
  
  CONCLUSIONS
  In the majority of the cases evaluated, magnetic resonance imaging was clearly indicated according to the ACR criteria. The main indication was local recurrence after surgical treatment of pelvic malignancies, which is consistent with the routine protocols at cancer centers.
authors.affiliation: MD, Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
authors.forename: Camila Silva
authors.initials: CS
authors.lastname: Boaventura
authors.affiliation: MD, Resident in the Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
authors.forename: Daniel Padilha
authors.initials: DP
authors.lastname: Rodrigues
authors.affiliation: MD, Resident in the Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
authors.forename: Olimpio Antonio Cornehl
authors.initials: OA
authors.lastname: Silva
authors.affiliation: MD, Resident in the Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
authors.forename: Fabrício Henrique
authors.initials: FH
authors.lastname: Beltrani
authors.affiliation: MD, Resident in the Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
authors.forename: Rayssa Araruna Bezerra
authors.initials: RA
authors.lastname: de Melo
authors.affiliation: PhD, MD, Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
authors.forename: Almir Galvão Vieira
authors.initials: AG
authors.lastname: Bitencourt
authors.affiliation: MD, Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
authors.forename: Gustavo Gomes
authors.initials: GG
authors.lastname: Mendes
authors.affiliation: PhD, MD, Head of the Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
authors.forename: Rubens
authors.initials: R
authors.lastname: Chojniak
keywords: Female pelvis; Magnetic resonance imaging; Oncology