Unicentric Castleman’s Disease Revealed by 18F-FDG PET/CT and Somatostatin Receptor Scintigraphy With 99mTc-HYNIC-TOC

A 51-year-old woman with a history of hypertension and abdominal pain was found with a retroperitoneal mass. The mass had intense enhancement in contrast-enhanced CT, and it showed a moderate degree of increased FDG uptake in PET/CT. The mass was also positive in somatostatin receptor scintigraphy with 99mTc-HYNIC-TOC, but it was negative in 131I-MIBG scan. The histopathological result after surgical resection of the mass confirmed the diagnosis of Castleman's disease, the hyaline vascular variant.

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