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- W2022177841 abstract "INTRODUCTION: The aim of our study was to evaluate the cure rate of macroprolactinomas treated for a long term (> 4 years) or a short term (<4 years) with dopamine agonists (DA) alone or combined with radiotherapy (RT). Sometimes pituitary surgery was performed. MATERIAL AND METHODS: We performed a retrospective study in 111 patients with macroprolactinomas, hospitalized in the Institute of Endocrinology, Bucharest, between 1978-2005. There were two groups, according to the length of DA therapy: group A =41 patients, treated more than 4 years and group B =70 patients, treated less than 4 years. Overall, 25 patients underwent additional radiotherapy, 13 in group A and 12 in group B. 28 patients were submitted to pituitary surgery, 9 in group A and 19 in group B. RESULTS: The cure rate (i.e. normalization of prolactin=PRL level and absence or minimal residual tumor mass, stable minimum 2 years after DA withdrawal) was 5/41 (12.1%) in group A and none in group B. 48 out of 111 patients achieved significant improvement (serum prolactin level less than 20 ng/ml and tumor shrinkage more than 50%) during DA therapy, but not after DA withdrawal: 17/41patients (41.5%) in group A and in 31/70 patients (44.3%) in group B, p=NS. Radiotherapy produced an additional improvement: in serum PRL levels only in group A, in 4/13 patients- 2/8 patients responsive to DA therapy and 2/5 patients resistant to DA therapy. In group B, the 3 patients resistant to DA submitted to radiotherapy were evaluated before the interval necessary for maximal effect of radiotherapy, but in 4/9 patients responsive to DA, we noticed further reduction in tumor volume, 2/4 progressing from mild to significant tumor shrinkage and ¼ progressing from no shrinkage to mild shrinkage. After radiotherapy, the medium prolactin level was 5.1 ng/ml in 10 patients from both groups on low bromocriptine (BRC) dose (7.5 mg/day), significantly less than in patients without radiotherapy, i.e. than in 19 patients from group A" @default.
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- W2022177841 date "2005-01-01" @default.
- W2022177841 modified "2023-10-16" @default.
- W2022177841 title "Additional Effects of Radiotherapy to Dopamine Agonists in the Treatment of Macroprolactinomas" @default.
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- W2022177841 doi "https://doi.org/10.4183/aeb.2005.43" @default.
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