Abstract:
:Incidental adrenal lesions found on anatomic imaging are not uncommon. 2-Deoxy-2-[18F]fluoro-D-glucose positron emission tomography (FDG-PET) imaging is highly accurate in the differentiation of benign from malignant adrenal lesions, both in patients with proven malignancy and with adrenal lesions detected incidentally. A 60-year-old white female with a history of lower mid-back pain underwent computerized tomography (CT) imaging that identified a 15-cm complex mass within the left adrenal gland with soft tissue, cystic, and adipose components. FDG-PET imaging showed significant hypermetabolic activity within portions of the mass with central photopenia suggesting a malignant lesion with central necrosis. Surgical excision and pathological examination, however, revealed a benign adrenal myelolipoma with extensive adenomatous and hematopoietic elements. Prior reports of adrenal myelolipoma evaluated with FDG-PET imaging have described no significant FDG uptake within these benign tumors. This case is an unusual example of histologically proven benign adrenal myelolipoma that was hypermetabolic on FDG-PET imaging. Correlation of pathologic and imaging findings demonstrated that the hypodense regions on CT were hypometabolic on FDG-PET and corresponded to cystic necrosis and adipose elements, whereas the adenomatous and hematopoietic elements were hypermetabolic.
journal_name
Mol Imaging Bioljournal_title
Molecular imaging and biologyauthors
Ludwig V,Rice MH,Martin WH,Kelley MC,Delbeke Ddoi
10.1016/s1536-1632(02)00018-5keywords:
subject
Has Abstractpub_date
2002-10-01 00:00:00pages
355-8issue
5eissn
1536-1632issn
1860-2002pii
S1536163202000185journal_volume
4pub_type
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