Potentially radiation-induced late toxicity after irradiation of pituitary adenoma, a retrospective dosimetric study

The median follow-up time was 54.94 months. None of the patients experienced acute side effects of grade 3 or higher. Regarding late side effects, new-onset hypopituitarism was observed in 14.3% of patients, with all patients exceeding the dose constraint to pituitary gland. Additionally, 25.7% reported subjective memory loss complaints, 4 underwent a neuropsychological assessment, and only 2 were confirmed. Furthermore, 8 out of 9 patients did not adhere to the maximum dose constraints for the hippocampus. Subjective auditory impairment was experienced by 31.3% of patients, with 4 out of 11 undergoing ENT evaluation, and 1 out of 4 describing radio-induced tubal catharsis. All 11 patients adhered to the cochlear constraints. Five cases of cataracts were reported, with all patients adhering to lens constraints, although they were significantly older than those without cataracts. Two cases of temporary cranial nerve deficits, one visual impairment, one epilepsy, and one transient ischemic attack were also documented.