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Pediatric Radiology

, Volume 48, Issue 5, pp 694–700 | Cite as

Pituitary height at magnetic resonance imaging in pediatric isolated growth hormone deficiency

  • Netsiri Dumrongpisutikul
  • Ammarut Chuajak
  • Sukalaya Lerdlum
Original Article

Abstract

Background

Magnetic resonance imaging (MRI) is used for neuroradiologic evaluation of patients with idiopathic growth hormone deficiency (IGHD).

Objectives

To compare pituitary height and morphology at MRI between patients with IGHD and controls.

Materials and methods

This retrospective study was conducted in pediatric patients, 3 years–15 years old, who had had brain MRI with non-contrast-enhanced midsagittal T1-weighted images. These images were measured for pituitary height and morphology of the pituitary gland including shape, stalk and posterior pituitary bright spot was evaluated.

Results

One hundred and nineteen patients were included, with 49 and 70 patients assigned to the study and control groups, respectively. Mean pituitary height was significantly less in the IGHD group than in the control group (3.81 mm±1.38 vs. 4.92 mm±1.13, retrospectively; P<0.001). Subgroup analysis revealed a significant difference in the pituitary height between groups in the prepubertal (8–10 years) and pubertal (11–13 years) periods (P=0.039 and P=0.006, respectively) and a trend toward significance in the postpubertal period (P=0.053). There was a significant difference in pituitary shape between IGHD and controls when combining grades III, IV and V (P=0.007). Other abnormal MRI findings of the pituitary stalk and posterior bright spot were significantly more often observed in the IGHD group (P<0.05).

Conclusion

Pituitary height was significantly smaller in patients with IGHD than in controls during prepuberty and puberty. Abnormal concave superior contour, hypoplastic stalk and absent/ectopic posterior bright spot were observed significantly more often among patients with IGHD.

Keywords

Children Growth hormone Idiopathic growth hormone deficiency Magnetic resonance imaging Pituitary gland 

Notes

Acknowledgements

We gratefully acknowledge the Division of Pediatric Endocrinology, Department of Pediatrics, King Chulalongkorn Memorial Hospital for providing study data and Associate Professor Dr. Cameron Hurst for assistance with statistical analysis.

Compliance with ethical standards

Conflicts of interest

None.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Radiology, Faculty of MedicineChulalongkorn UniversityBangkokThailand
  2. 2.Department of RadiologyKing Chulalongkorn Memorial HospitalBangkokThailand

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