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  • Title: [The therapy of a macroprolactinoma with the intramuscular application of a long-acting bromocriptine preparation].
    Author: Kreft B, Peters A, Kerner W.
    Journal: Dtsch Med Wochenschr; 1996 Jul 05; 121(27):865-8. PubMed ID: 8681742.
    Abstract:
    HISTORY AND CLINICAL FINDINGS: Three years ago, a now 26-year-old woman with secondary amenorrhoea was found to have a prolactinoma which was treated with bromocriptine. However, because of side effects and psychosocial problems she took the drug only irregularly. There were no neurological symptoms and the visual fields were normal. Her weight was 97 kg and her height 168 cm. INVESTIGATIONS: Without treatment the serum prolactin concentration was 6978 microU/ml, while other endocrine parameters were unremarkable. Cranial computed tomography showed a suprasellar adenoma (craniocaudal diameter 1.0 cm). TREATMENT AND COURSE: Renewed treatment with bromocriptine (5 mg three times daily) brought prolactin concentration to within normal limits, but then rose again to at least 52,600 microU/ml when the patient took the drug irregularly, and the tumour grew to 2.8 cm. As the obesity (her weight now 120 kg) made neurosurgical intervention very risky a treatment trial with long-acting bromocriptine preparation (50 mg bromocriptine every 28 days intramuscularly), was undertaken. Serum prolactin concentration, measured at the end of the 28-day period, rapidly fell (6470 microU/ml after 3 months). Radiological examination indicated significant tumour shrinkage ( < 1.0 cm after 2 years). CONCLUSION: Repeated intramuscular administration of bromocriptine was an effective, well tolerated alternative (but not yet licensed in Germany) to oral dopamine agonists in the treatment of macroprolactinoma.
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