FDG PET/CT in Papillary Intralymphatic Angioendothelioma of the Spleen.

Jiao, Benzheng; Liu, Hongxia; Ma, Xiaobo; Dong, Aisheng; Zhao, Hongguang · Clin Nucl Med · 2025

case_report · Level V

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Abstract

Splenic papillary intralymphatic angioendothelioma is extremely rare. We describe FDG PET/CT and MRI findings of splenic papillary intralymphatic angioendothelioma in a young adult. The splenic tumor showed hypodensity and increased FDG uptake with SUV max of 4 on PET/CT, heterogeneous signal intensity with internal hypointense stellate scars on T2-weighted image, and progressive centripetal enhancement on dynamic contrast-enhanced T1-weighted images. This case indicates that papillary intralymphatic angioendothelioma should be included in the differential diagnosis of FDG-avid splenic lesions.

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