title: The long-term recurrence of Rathke's cleft cysts as predicted by histology but not by surgical procedure.
abstract: OBJECTIVE Patients with symptomatic Rathke's cleft cysts (RCCs) managed by surgical treatment often experience recurrence. The authors attempted to clarify the outcome of surgically treated RCCs over a long-term follow-up period. METHODS Ninety-one consecutive RCC patients with a follow-up period of more than 12 months (mean 80.2 months, range 12-297 months) were retrospectively studied. The authors examined the clinical features and postoperative course of patients who experienced a reaccumulation of cyst contents visible on MRI after the initial surgery, and they investigated data from the patients who underwent reoperation for symptomatic recurrent RCCs. RESULTS Reaccumulation of cyst contents occurred in 36 patients (39.6%). In 34 of these patients, a reaccumulation occurred in the first 5 years after surgery. The initial cysts in these patients were most often large, with squamous metaplasia in the cyst walls. Thirteen patients (14.3%) with recurrent symptoms underwent a reoperation, and 10 of the 13 patients had a reaccumulation of RCCs within the 1st year after surgery. The reoperations were performed in the 1st year (61.5%) or several years later (23.1%). Patients were likely to initially have had a visual disturbance and the cyst walls likely included squamous metaplasia. However, no association was observed between the incidence of reaccumulation/reoperation of RCCs and the surgical procedure for RCCs. CONCLUSIONS The reaccumulation rate of RCC is high in the long-term period, and it is associated with the histological findings but not with the surgical procedure. Long-term monitoring, for a period of at least 5 years, should therefore be conducted to identify and assess any RCC reaccumulation.
authors.affiliation: Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Kinoshita
authors.affiliation: Department of Neurosurgery, Hiroshima Prefectural Hospital; and.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Tominaga
authors.affiliation: Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Usui
authors.affiliation: Department of Neurosurgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Arita
authors.affiliation: Department of Neurosurgery, Hiroshima Prefectural Hospital; and.
authors.forename: Tetsuhiko
authors.initials: T
authors.lastname: Sakoguchi
authors.affiliation: Department of Clinical Oncology and Neuro-oncology Program, Hiroshima University Hospital, Hiroshima; and.
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Sugiyama
authors.affiliation: Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University.
authors.forename: Kaoru
authors.initials: K
authors.lastname: Kurisu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001932:Brain Neoplasms / Q000473:pathology* / Q000601:surgery*; D020863:Central Nervous System Cysts / Q000473:pathology* / Q000601:surgery*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology*; D019635:Neurosurgical Procedures / Q000379:methods; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D055815:Young Adult
keywords: RCC = Rathke's cleft cyst; Rathke's cleft cysts; TSS = transsphenoidal surgery; long-term outcome; oncology; reaccumulation; recurrence; transsphenoidal surgery