12572 Incidental Adrenal Enlargement On Ct Scan In South Brooklyn Health, How Often Is It Functional?

Abstract

Abstract Disclosure: R. Ruggiero: None. N. Simon: None. Background: Incidental findings of adrenal hyperplasia are increased due to the widespread rise in cross sectional imaging, as well as improvement of imaging modalities. There is a lack of literature reporting on the prevalence of incidental adrenal hyperplasia. One study reported a prevalence of 11.3%. Adrenocortical hyperplasia can result from endocrine disorders such as ACTH dependent and independent Cushing syndrome, primary aldosteronism, Multiple Endocrine Neoplasia type 1, and congenital adrenal hyperplasia. Other reported causes are radiographic adrenal enlargement of unknown cause and without clinical or biochemical manifestations, inflammation, neoplasms, and depression. Most cases are a radiographic finding with no clinical significance. One study reported that 69.23% of cases were nonfunctional. There are currently no guidelines in place for biochemical evaluation of incidental adrenocortical hyperplasia. Patients are typically referred to endocrinology services. Objective: The purposes of this study was to: 1. Evaluate the number of patients referred to endocrinology clinic for incidental abnormal adrenal imaging. 2. Examine the percentage of abnormal adrenal imaging findings on CT scan, in particular adrenal hyperplasia, that are hormonally active. Methods: This was a retrospective study of patients who were referred to endocrinology clinic or electronic endocrine consult for incidental abnormal adrenal imaging, excluding those with clear diagnosis of masses, nodules, adenomas, or cysts. Data collected included demographics, type of study imaging and radiologist reader, hormonal studies, comorbid conditions such as diabetes mellitus, hypertension, obesity, osteoporosis, as well as visit type to endocrinology service (e-consult vs in person). Results: The total number of consults referred to endocrinology during this period was 138. Due to repeat referral or having an adrenal pathology other than hyperplasia, 83 patients were excluded from analysis. There were 55 patients with isolated adrenal hyperplasia, 86% of whom were Caucasian, 11% Hispanic, and 78% of patients were female. Median age 63 years old. Hypertension was noted in 69% of patients, 36% had diabetes mellitus or dysglycemia, 36% were obese, and 1.8% had osteoporosis. Imaging reading was performed by 3 radiologists, 75% of cases reported by one reader. Only 5% of referrals were answered as an e-consult. About 27% of patients did not show up to establish care. Hormonal workup was completed by 60% of the patients, with 16 % having abnormal findings. One patient required confirmatory workup. No patients required treatment. Conclusion: Adrenal Hyperplasia is often an incidental radiologic finding, that can be reader dependent. Most cases are nonfunctioning without abnormal findings on hormonal workup. E-Consultation can be an efficient tool to help PCP and reduce endocrine clinic visits. Presentation: 6/1/2024