title: [Fractionated stereotactic-guided radiotherapy in the treatment of pituitary adenomas].
abstract: OBJECTIVE
  To evaluate the survival rates, prognostic factors and adverse events in patients with pituitary adenomas following fractionated stereotactic-guided radiotherapy (FSRT).
  
  
  METHODS
  Fifty-six patients with pituitary adenomas were treated with FSRT; 23 patients (41.1%) had primary adenomas, 33 had recurrent disease; 24 (42.9%) with non-functional and 32 (57.1%) with functional adenomas. Using conventional fractionation, median total dose administered was 54 Gy (range: 24-56 Gy).
  
  
  RESULTS
  The median follow-up was 51 months (range: 9-102) and, at the time of analysis, 49 patients were alive and disease-free, 1 patient was alive with reduced visual acuity and biochemical indications of recurrence, 2 patients had died from the disease and 1 patient had died from unrelated causes. Overall survival was 94% (50/53) and overall local tumour control was 92% (49/53). Univariate analysis indicated hormonal secretion (ACTH) and previous radiotherapy as being statistically significant. Fourteen patients (25%) had minor side-effects during treatment and 3 patients (5.4%) had late-onset events; 2 with optical neuropathy (both patients had other relevant co-existing diseases) and 1 patient had brain necrosis (re-irradiation).
  
  
  CONCLUSIONS
  Fractionated stereotactic-guided radiotherapy is an effective modality for the treatment of pituitary adenomas. Care is required in patients with co-morbidities and/or previously-irradiated recurrent tumour so as to minimise late-onset secondary effects.
authors.affiliation: Unidad de Oncología - Radioterapia - Radiocirugía, Hospital San Francisco de Asís, Madrid, España.
authors.forename: Rosa M
authors.initials: RM
authors.lastname: Cañón Rodríguez
authors.forename: David
authors.initials: D
authors.lastname: Ortiz de Urbina
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Viera
authors.forename: César
authors.initials: C
authors.lastname: Beltrán
authors.forename: Fernando
authors.initials: F
authors.lastname: Puebla
authors.forename: M Isabel
authors.initials: MI
authors.lastname: García Berrocal
authors.forename: Ana
authors.initials: A
authors.lastname: Mañas
authors.forename: Carmen
authors.initials: C
authors.lastname: Peraza
authors.forename: Felipe A
authors.initials: FA
authors.lastname: Calvo
mesh_terms: D000236:Adenoma / Q000401:mortality / Q000532:radiotherapy*; D019583:Dose Fractionation, Radiation; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D010911:Pituitary Neoplasms / Q000401:mortality / Q000532:radiotherapy*; D011379:Prognosis; D011878:Radiotherapy / Q000009:adverse effects / Q000379:methods; D012189:Retrospective Studies; D015996:Survival Rate