ArticleInternational journal of medical sciences2026
The diagnostic role of machine learning models related to visceral fat with sex-specific distribution in subtypes of primary aldosteronism.
Article in International journal of medical sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Primary aldosteronism (PA) subtypes exhibit significant sex-specific differences, particularly regarding cardiovascular risk and the metabolic syndrome. This study investigated these differences between subtypes and developed a machine learning model for subtype prediction. Design and Methods: This retrospective study analyzed clinical and imaging data from 276 PA patients, subtyped by adrenal venous sampling. Visceral and cardiac adipose deposition were quantified, least absolute shrinkage and selection operator (LASSO) regression identified optimal predictive parameters for model development. Results: Unilateral PA (UPA) presented with prominent hypertension and hypokalemia, whereas bilateral PA (BPA) showed more visceral fat deposition, with notable sex differences. (1) In males, the BPA group had a higher body mass index, abdominal fat, and larger epicardial adipose tissue (EAT) volume along with a greater E/e' ratio compared to UPA. (2) Across both subtypes, males demonstrated more abdominal fat than females. (3) In females, BPA had higher triglycerides, serum calcium than UPA. (4) In males, an XGBoost model using visceral fat area (VFA), serum potassium, systolic blood pressure, and plasma aldosterone concentration (PAC) achieved an AUC of 0.84±0.05. An XGBoost model in females based on serum potassium, lipid profile, PAC after saline infusion test, and CT nodule characteristics yielded an AUC of 0.75±0.02. Conclusion: PA subtypes exhibit prominent sex-specific cardiometabolic profiles. In males, BPA correlates with significantly greater ectopic fat deposition and elevated cardiovascular risks. Combining VFA with key biochemical markers demonstrates superior diagnostic efficacy for PA subtyping in the male group.
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