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Growth modelling of non-functioning pituitary adenomas in patients referred for surgery.

Abstract：

OBJECTIVE:Recent observational studies have established progression and recurrence rates of pituitary adenomas. However, it is still unknown how individual pituitary adenomas grow over years and whether growth kinetics follow a distinct growth model. The objective of this study was to define a growth model for non-functioning pituitary adenomas. METHODS:Fifteen patients who had five or more serial high-quality examinations with magnetic resonance images or computerized tomography scans were identified among 216 patients with non-functioning pituitary adenomas. Tumour volumes were assessed using a stereological method based on the Cavalieri principle. Tumour growth during the observation period was analysed and different growth models were fitted to the data. RESULTS:Fifteen pituitary adenomas (12 recurrent tumours and 3 newly diagnosed tumours) were longitudinally observed during a median observation period of 7.4 years (range: 2.3-11.9 years). Growth kinetics could be described either by an exponential growth model (nine patients) or by a logistic model (five patients) with initial exponential growth followed by deceleration of growth. One tumour remained unchanged in size during the observation period. None of the adenomas showed accelerated growth during the observation period. Overall, the linear growth model was not suitable to describe the growth kinetics of non-functioning pituitary adenomas. CONCLUSIONS:Our study shows that growth of pituitary adenomas can be described by distinct growth models. Knowledge of growth dynamics has implications for clinical practice and helps to adjust scanning protocols for follow-up investigations.

journal_name

Eur J Endocrinol

journal_title

European journal of endocrinology

authors

Honegger J,Zimmermann S,Psaras T,Petrick M,Mittelbronn M,Ernemann U,Reincke M,Dietz K

doi

10.1530/EJE-07-0502

subject

Has Abstract

pub_date

2008-03-01 00:00:00

pages

287-94

issue

3

eissn

0804-4643

issn

1479-683X

pii

158/3/287

journal_volume

158

pub_type

杂志文章

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