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A prospective study of 55 patients with large and giant prolactin-secreting pituitary tumors receiving dopamine agonists as primary treatment was performed. Statistically significant data were obtained indicating decrease of prolactin level, improvement of vision, normalization of sexual function and shrinking of the tumor. Effectiveness and safety of dopamine agonists in patients with large and giant prolactinomas are proved. Also we discovered possibility of nasal CSF leak during conservative treatment.
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