Management of incidentally discovered adrenal masses and risk of malignancy
Abstract
Background Incidentally discovered adrenal masses of more than 1 cm in size are relatively frequent, but the correct management of such lesions is not well established.Methods Between 1980 and 1999, 158 patients (73 men [46.2%] and 85 women [53.8%]; median age, 58 years) with adrenal incidentalomas of more than 2 cm in size were observed. Sixty-eight patients (43.0%) underwent adrenalectomy. The main reasons for surgery were (1) suspicious computed tomography (CT) scan or magnetic resonance imaging (MRI) appearance or no uptake at the 75-Se-norcholesterol scintigraphy (NCS; n = 22 patients), (2) an increase in the size of the mass of more than l cm (n = 15 patients), (3) subclinical endocrine hyperfunction (n = 14 patients), and (4) mass size of more than 5 cm (n = 22 patients), with imaging-guided fine-needle aspiration biopsy with spinal-type narrow-gauge needle (FNAB) that suggested malignancy (n = 5 patients).Results Pathologic examination showed 39 adrenocortical adenomas (57.4%), 20 adrenal malignancies (29.4%; carcinomas, 15; unsuspected metastases, 3; nonfunctioning malignant pheochromocytomas, 2), and 9 various benign lesions (13.2%). All masses that increased in size were benign. Seven malignant tumors (46.7%) were 3 to 4 cm in size, and 14 benign lesions (29.1%) were 5 to 6 cm in size. Sensitivity and specificity in the detection of malignancy were 100% and 100% for NCS (n = 34 patients) and FNAB (n = 19 patients), 75.0% and 93.7% for CT scan (n = 68 patients), and 87.5% and 100% for MRI (n = 26 patients), respectively.Conclusions To differentiate benign and malignant incidentalomas, NCS and FNAB are more sensitive than CT scan and MRI; size criteria are of little value.
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All studies consistently report a higher incidence of ACC if the adrenal mass is greater than 4 cm in size.
“However, it should be noted that all studies consistently report a higher incidence of ACC if the adrenal mass is greater than 4 cm in size (39,49,63,66,71).”
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The 1-mg dexamethasone suppression test is the most used test for diagnosing subclinical hypercortisolism.
“To date, the 1-mg DST is the most used test to diagnose SH, either alone (34 -36, 38, 44 -46) or in combination with other parameters (9, 18, 21, 32, 37, 39, 42, 49, 52-54, 56, 60, 61).”
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- Authors
- Favia, G., Lumachi, F., Basso, S., & D'Amico, D. F.
- Affiliations
- University of Padua (IT)
- Venue
- Surgery
- Publisher
- Elsevier BV
- Published
- 2000-12
- Volume
- 128
- Issue
- 6
- Pages
- 918-924
- ISSN
- 0039-6060 (ISSN-L)
- OpenAlex
- W2083316743
- Cited by
- 87
- References
- 26
- Citations by year
- 2026: 1 · 2025: 1 · 2023: 2 · 2022: 2 · 2021: 3 · 2020: 5 · 2019: 1 · 2018: 1 · 2017: 2 · 2016: 4 · 2015: 1 · 2014: 3 · 2013: 1 · 2012: 6
- FWCI
- 7.19
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Surgery (publishedVersion)
- PubMed (publishedVersion)
- Padua Research Archive (University of Padova) (submittedVersion)
- Topics
- Health Sciences › Medicine › Surgery › Adrenal and Paraganglionic Tumors
- Health Sciences › Medicine › Epidemiology › Neuroendocrine Tumor Research Advances
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
- Keywords
- adrenal incidentaloma, adrenal mass, adrenalectomy, adrenal adenoma, adrenocortical carcinoma, fine-needle aspiration, computed tomography, magnetic resonance imaging, tumor size, cancer risk, benign versus malignant differentiation
- MeSH terms
- Adolescent, Adrenal Gland Neoplasms, Adult, Aged, Biopsy, Needle, Blood Pressure, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Tomography, X-Ray Computed
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