La tomografia con emissione di positroni (PET) con F-18 FDG nello studio delle formazioni espansive con sede surrenalica: Confronto tra lesioni benigne e maligne

Translated title of the contribution: Positron emission tomography (PET) with F-18 FDG of adrenal masses: Comparison between benign and malignant lesions

Simone Maurea, Ciro Mainolfi, Hui Wang, Paola Varrella, Maria Rosaria Panico, Michele Klain, Riccardo Rossi, Francesco Cremona, Lucio Bazzicalupo, Marco Salvatore

Research output: Contribution to journalArticle

Abstract

In this study, 15 patients (4 men and 11 women, mean age: 50 ± 13 years) with unilateral adrenal masses detected on ultrasound (US), Computed Tomography (CT) and/or Magnetic Resonance (MR) studies were submitted to positron emission tomography (PET) with fluorine-18 deoxyglucose (FDG). Histology demonstrated 3 adenomas, 1 myelolipoma, 1 angiolipoma, 1 neurinoma, 1 cyst, 1 malignant pheochromocytoma, 4 carcinomas and 3 metastases. The patient population was divided into two groups. Group 1 (n = 7) consisted of benign adrenal lesions. Group 2 consisted of malignant adrenal tumors. Lesion measurements were performed on the basis of the results of US, CT and/or MR images. In Group 1, no FDG uptake was observed in adrenal masses. Conversely, in Group 2 adrenal lesions showed abnormally increased FDG uptake, suggesting high glucose tumor metabolism. No significant difference in lesion size was observed between Groups 1 and 2 (5.6 ± 4.0 vs 6.3 ± 3.0 cm). Furthermore, in 6 patients of Group 2, total body PET images showed abnormal FDG uptake in extra-adrenal locations, such as chest (n = 2) and abdominal (n = 5) lymph nodes, lungs (n = 6), liver (n = 5), pancreas (n = 1), bone (n = 1) and muscle (n = 1) tissues. In conclusion, the results of this study suggest that PET imaging with FDG can characterize adrenal masses. In particular, abnormally increased FDG uptake in adrenal malignancies allows to differentiate these abnormalities from benign lesions. Furthermore, total body imaging PET can identify extra-adrenal tumor sites in patients with malignant tumors.

Original languageItalian
Pages (from-to)782-787
Number of pages6
JournalRadiologia Medica
Volume92
Issue number6
Publication statusPublished - Dec 1996

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ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Maurea, S., Mainolfi, C., Wang, H., Varrella, P., Panico, M. R., Klain, M., Rossi, R., Cremona, F., Bazzicalupo, L., & Salvatore, M. (1996). La tomografia con emissione di positroni (PET) con F-18 FDG nello studio delle formazioni espansive con sede surrenalica: Confronto tra lesioni benigne e maligne. Radiologia Medica, 92(6), 782-787.