ArticleEndocrinology and metabolism (Seoul, Korea)2025
68Ga-DOTATOC PET/CT in the Localization of Pituitary Tumors in Cushing's Disease.
Article in Endocrinology and metabolism (Seoul, Korea), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Functional pituitary adenoma imaging.Reviews in endocrine & metabolic disorders · 2026Review
- A stacking model for AI-assisted diagnosis of suspected pituitary microadenomas on non-contrast T1COR MRI: a multicenter reader study on bridging the experience gap.Neuroradiology · 2026Article
- A pilot study of [Clinical and translational radiation oncology · 2026Article
- A multicenter-validated interpretable transformer model for pituitary microadenoma detection on non-contrast multiparametric MRI.BMC medical imaging · 2026Article
- New Sparks and Spots: Molecular Imaging with Positron Emission Tomography Will Change Management of Cushing's Disease.Endocrinology and metabolism (Seoul, Korea) · 2026Review
- [Frontiers in endocrinology · 2026Article
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10 authors.
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Abstract
backgruoundThis study aimed to determine the value of 68Ga-DOTATOC positron emission tomography/computed tomography (PET/CT) in localizing adrenocorticotropic hormone (ACTH)-secreting pituitary adenomas.
methodsIn this retrospective cohort study, we enrolled 30 patients with Cushing's disease and positive ACTH immunoreactivity. All patients underwent 68Ga-DOTATOC PET/CT and pituitary magnetic resonance imaging (MRI) before transsphenoidal adenomectomy.
resultsTwenty-five patients showed 68Ga-DOTATOC uptake in their pituitary glands on PET/CT. Median age, pre-operative ACTH levels, pre-operative cortisol, and tumor size on MRI were comparable irrespective of DOTATOC uptake. 68Ga-DOTATOC PET/CT showed a 77% success rate for localizing adenomas, which was not statistically different from that of MRI. The ACTH level in the successful localization group was significantly higher than that in the failed group (84.41 pg/mL vs. 37.26 pg/mL, P=0.001). The ACTH level was statistically significant predictor of successful localization using 68Ga-DOTATOC PET/CT (P=0.013). The area under the curve was 0.932 with a cutoff of 53.86 pg/mL for ACTH levels to determine successful localization. Pre-operative ACTH levels above 53.86 pg/mL showed the best diagnostic accuracy in predicting the success of localizing adenomas (sensitivity, 91.3%; specificity, 85.7%). Mean and maximum standardized uptake value of adenoma negatively correlated to pre-operative ACTH level.
conclusionPlasma ACTH level is a favorable predictor for the successful localization and negative correlation with 68Ga-DOTATOC uptake of corticotroph adenomas in 68Ga-DOTATOC PET/CT. 68Ga-DOTATOC PET/CT did not improve tumor localization for Cushing's disease compared with MRI alone.
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