Adrenal Pseudocyst Masquerading as Adrenocortical Carcinoma

Incidental adrenal cysts are quite rare and thus can present a diagnostic conundrum for even experienced clinicians. Here, we present the case of a patient with an incidentally identified 5 cm adrenal mass. Her evaluation was notable for evidence of mild autonomous cortisol secretion and imaging fin...

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Bibliographic Details
Main Authors: Andrew C. Hu, Jesse E. Passman, Heather Wachtel
Format: Article
Language:English
Published: SAGE Publishing 2025-06-01
Series:Clinical Medicine Insights: Endocrinology and Diabetes
Online Access:https://doi.org/10.1177/11795514251345267
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Summary:Incidental adrenal cysts are quite rare and thus can present a diagnostic conundrum for even experienced clinicians. Here, we present the case of a patient with an incidentally identified 5 cm adrenal mass. Her evaluation was notable for evidence of mild autonomous cortisol secretion and imaging findings concerning for malignancy with possible invasion of the inferior vena cava. Adrenalectomy was performed; pathology ultimately demonstrated an adrenal cortical pseudocyst without evidence of malignancy. All patients with solid, high-density, or large adrenal tumors require further imaging for characterization and biochemical testing for hormone secretion. While simple, low-density adrenal adenomas and cysts do not require further imaging evaluation beyond non-contrast CT, mixed cystic and solid lesions or pseudocystic lesions should be evaluated similarly to solid tumors, with the caveat that pseudocysts cannot always be well-differentiated from benign cysts on imaging. All adrenal incidentalomas should be evaluated with a biochemical work-up to assess hormonal activity. Tumors suspicious for malignancy require surgical excision. Patients with benign, hormonally active tumors should be managed surgically or medically, according to their primary pathology.
ISSN:1179-5514