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Impact of pre-treatment with somatostatin analogs on surgical management of acromegalic patients referred to a single center.

Abstract：

:First-line treatment of patients with growth hormone secreting adenomas is surgical resection. Disease control can be obtained by surgery (one or multiple steps), in case followed by medical treatment or adjuvant radiation therapy (radiosurgery or radiotherapy). The impact of pre-surgical treatment with somatostatin analogs (SSAs) on surgical outcome is still controversial. The aim of this study is to retrospectively evaluate the impact of SSA pre-treatment on biochemical outcome and post-surgical hypopituitarism in a consecutive surgical series from a single referral centre, with data covering 17 years' experience and to investigate the possible predictive value of early postoperative insulin-like factor 1 (IGF-I) on long-term biochemical control. Data from 68 acromegalic patients were revised. Endocrinological long-term follow-up (minimum 6 months) was available for 57 patients. Eighty-eight percent of patients received a single-step surgical treatment (single surgery, with or without adjuvant medical therapy). The remaining 12% underwent a multi-step strategy: redo-surgery (three macroadenomas) and/or radiation (four macro- and two microadenomas). Pre-surgical SSA treatment was performed in 77.9% and resulted in a significant lowering of basal IGF-I values (p = 0.0001). Early post-surgical IGF-I was significantly lower in patients biochemically controlled with single surgery alone (p = 0.016) and after overall treatment strategies (p = 0.005). Normalization of GH and IGF-I was obtained in 56.1%, and normalization of either one of them in 27.8% of patients. No major surgery-related complications occurred. Post-treatment hypopituitarism occurred in 11.9% and was lower in SSA pre-treated patients. Our results well compare with other recently published series. Very early post-surgical IGF-I improvement might be a useful predictor for biochemical disease control. Moreover, our results suggest that pre-surgical treatment with somatostatin analogs seems to prevent hypopituitarism.

journal_name

Endocrine

journal_title

Endocrine

authors

Bacigaluppi S,Gatto F,Anania P,Bragazzi NL,Rossi DC,Benvegnu G,Nazzari E,Spaziante R,Giusti M,Ferone D,Zona G

doi

10.1007/s12020-015-0619-5

subject

Has Abstract

pub_date

2016-03-01 00:00:00

pages

524-33

issue

eissn

1355-008X

issn

1559-0100

pii

10.1007/s12020-015-0619-5

journal_volume

pub_type

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Impact of pre-treatment with somatostatin analogs on surgical management of acromegalic patients referred to a single center.