Abstract
Purpose
Giant prolactinoma (GP) in childhood and adolescence is a rare entity with scarce literature. We aimed to describe clinical features, biochemistry, radiology, genetics, management, and outcome in pediatric (≤ 20 years) GP.
Methods
Retrospective record review of 18 pediatric GP patients from our center and systematic review including these and 77 from the literature (total cohort: 95).
Results
GP constituted 20% of our pediatric prolactinoma cohort. In the total cohort (age: 15.4 ± 3.5 years), the majority (77, 82.8%) were males. Mass effect symptoms (88.6%), and pubertal delay/arrest in males (82.1%) were frequent. Median basal prolactin was 8649 (3246–17,532) ng/ml and the maximum tumor dimension was 5.5 ± 1.5 cm. MEN1 and AIP mutations were noted in 7 (21.9%) and 6 (18.8%) patients, respectively. Males with central hypogonadism had baseline bi-testicular volume of 20.2 ± 8.4 cc, lower LH than FSH (−2.04 ± 0.9 vs. −0.7 ± 1.6 SDS, p = 0.0075), and mostly, normal inhibin B. Majority (49/76, 64.5%) received dopamine agonist (DA) as first-line treatment with additional therapy in 35% (17/49). DA monotherapy arm had less frequent central hypothyroidism (42.9% vs 87.1%, p = 0.002) and central adrenal insufficiency (7.1% vs 66.7%, p = 0.0003) than multimodal therapy. A smaller tumor dimension (4.7 vs. 5.7 cm, p = 0.04) was associated with normoprolactinemia on DA monotherapy and AIP mutations (33.3% vs. nil, p = 0.02) with multimodal therapy.
Conclusion
GP is characterized by male predominance with frequent delay/arrest of puberty (82%), but relative sparing of the FSH-inhibin B axis in boys. DA monotherapy may be preferred as the first-line therapy in pediatric GP.
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Data availability
The datasets generated during and/or analyzed during this study are available on request from the corresponding author on reasonable request.
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Acknowledgements
The authors thank Dr. Neelam Jaguste and Dr. Aparna Kamble for their assistance in conducting the research.
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SK., VS. and ARL. were involved in the conception, data collection, analysis, interpretation, and drafting of the article. MS., SSM and MK. were involved in the data collection, analysis, interpretation, and critical revision of the article. SS. had done the radiological analysis. VAP., NS., and TB. all played a role in the conception, design, and interpretation of data and also critically reviewed and approved the final version of the article.
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Kumar, S., Sarathi, V., Lila, A.R. et al. Giant prolactinoma in children and adolescents: a single-center experience and systematic review. Pituitary 25, 819–830 (2022). https://doi.org/10.1007/s11102-022-01250-y
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DOI: https://doi.org/10.1007/s11102-022-01250-y