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  • Title: Recurrence following transsphenoidal surgery for acromegaly.
    Author: Buchfelder M, Brockmeier S, Fahlbusch R, Honegger J, Pichl J, Manzl M.
    Journal: Horm Res; 1991; 35(3-4):113-8. PubMed ID: 1806464.
    Abstract:
    The long-term results of transsphenoidal adenomectomy and the incidence of possible recurrences were studied in 61 patients who had normal basal serum growth hormone (GH) levels 1 week after surgery. The patients were followed up for an average of 6.0 years (range: 1.5-14.0 years) by repeated measurements of GH, oral glucose tolerance testing (OGTT) and at the last follow-up visit also by assaying somatomedin C levels. In 4 of the patients, the basal GH levels had increased to values above 5 ng/ml. In 43 patients, a normal suppression of GH during an oral glucose load was observed shortly after surgery. In only 2 of these cases did a transiently inadequate suppression develop during the follow-up period, although clinical acromegaly did not recur and the somatomedin C levels remained normal. It is concluded that recurrence of active acromegaly is unlikely to occur in patients who achieve a normal glucose-induced suppression of GH levels shortly after adenomectomy. As such, an OGTT provides better prognostic information than basal human GH level measurements and may give a clearer and earlier indication of surgical success.
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