Abstract
Purpose
To assess the long-term impact of postoperative two-field-conventional radiotherapy (RT) on neurocognitive functions of adult patients with operated pituitary adenomas (PA).
Methods
We selected 124 adult patients with operated PA—56 of whom had also received RT—recorded their main clinical data and performed a neuropsychological assessment in all of them that included 15 standardized tests, and a cerebral SPECT in eight patients. Comparative analyses were carried out on major clinical and neurocognitive domains between irradiated and not irradiated patients, and on cerebral SPECT source.
Results
Compared with non-irradiated patients, irradiated patients performed significantly worse on Barcelona’s story recall test (P < 0.001) and arithmetic problems (P < 0.03) and on five categories of the Wisconsin card sorting test, especially on perseverative answers and errors (P < 0.001) without differences in other examined functional domains. RT was the only factor associated with worse results in these tests regardless other clinical and treatment-related variables. Kaplan–Meier analysis suggested that the probability of achieving poorer results with time was related to RT total dose and field-size, type of PA and age at the time of RT. Four of the five SPECTS performed in irradiated patients revealed a similar altered perfusion in the left temporal lobe cortical region.
Conclusions
In adult patients with operated PA, RT was independently associated with an impairment on verbal memory and executive function, when compared to non-irradiated patients. Our data suggest that diagnosis of acromegaly or Cushing’s disease, and age at the time of RT were able to modulate this long-term radioinduced neurocognitive sequelae.
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Acknowledgments
We thank all patients for their collaborative participation in this study and Ana Ruiz, José Ortiz Berrocal, and Rosa Magallón for their help in selecting the battery of neurocognitive tests, SPECT performance and interpretation, and radiotherapy data collection, respectively.
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The authors have nothing to disclose.
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Lecumberri, B., Estrada, J., García-Uría, J. et al. Neurocognitive long-term impact of two-field conventional radiotherapy in adult patients with operated pituitary adenomas. Pituitary 18, 782–795 (2015). https://doi.org/10.1007/s11102-015-0653-6
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DOI: https://doi.org/10.1007/s11102-015-0653-6