Objective: To evaluate the response of incidentally discovered pituitary cysts to growth hormone (GH) treatment.
Methods: A retrospective chart review was performed of children with pituitary cysts on magnetic resonance imaging (MRI) over a 5-year period. Records and images were reviewed, and the results were analyzed using descriptive statistics. Children with pituitary cysts who received GH treatment were compared with those without.
Results: We identified 109 children with pituitary cysts, 24 were treated with GH therapy. The average age was 8.5 ± 5.1 years. Children whose initial MRI scan was to evaluate growth hormone deficiency were more commonly male and non-Hispanic White compared with those with scans for other indications (male, 18 of 24 vs 35 of 85, P = .003; White, 23 of 24 vs 58 of 85, P = .004). Among patients who received GH treatment, 12 had follow-up MRI. Six had no change in cyst size and 6 had a decrease in cyst size. We observed no difference in the likelihood of cyst growth between those who received GH and those who did not (0 of 12 cysts with GH vs 1 of 15 cysts without GH showed growth at follow-up). No patient had neurologic deficits attributable to the pituitary cyst at any time.
Conclusion: In a single-institution, retrospective study, we find no evidence of growth in pituitary cysts in response to GH therapy.
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