Pituitary microadenoma
Pituitary microadenoma, its a pituitary neuroendocrine tumor less than 10 mm in diameter.
At the time of diagnosis, 90 % of prolactinomas in women are microadenomas, vs. 60 % for males probably due to gender-specific differences in symptoms resulting in an earlier presentation in females.
Pituitary microadenoma diagnosis
Follow-up recommendations
No consensus exists regarding follow-up recommendations for suspected pituitary microadenoma in children. To address this knowledge gap, Borghammar et al. from Lund investigated the growth potential of pituitary solid and cystic lesions <10 mm in children and evaluated the accuracy of magnetic resonance imaging (MRI) measurements.
Non-functioning pituitary microadenoma in children has small size variations, often below the spatial resolution of the scanners. They suggest lesions <4 mm only for clinical follow-up, lesions 4-6 mm for MRI after 2 years, and ≥7 mm MRI after 1 and 3 years, with clinical follow-up in between. If no progression, further MRI should only be performed after new clinical symptoms or hormonal disturbances. 1) 2)