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Updated: Feb 21, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
Published on: September 15, 2017
Large Unilateral Adrenal Mass with Surrounding Brown Fat: A Case Report
Gabriel O Ologun1, Zinal M Patel2, Navpreet K Rana1
1General Surgery, Guthrie Clinic/Robert Packer Hospital.
Abstract:
Pheochromocytomas are rare tumors derived from chromaffin cells located in the adrenal and extra adrenal tissues. Pheochromocytomas are diagnosed biochemically and localized using different imaging modalities. The definitive management is surgical resection. Brown adipose tissues are normally present during fetal development, with regression over time. Brown adipose tissues are thermogenic and usually located in the neck, mediastinum, and retroperitoneum. Here, we report a case of a unilateral pheochromocytoma surrounded by brown fat. The abnormal stimulation of brown fat noted on positive emission tomography scan (PET) resolved after the pheochromocytoma was resected.
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