Irregular large patulous thin-walled spaces containing proteinaceous material, lined by attenuated endothelium
Pale eosinophilic cytoplasm
Monomorphic ovoid hyperchromatic nuclei; inconspicuous mitotic activity
Background of mature adipose tissue
IHC: D2-40
Irregular patulous thin-walled spaces containing proteinaceous material, lined by attenuated endothelium
Pale eosinophilic cytoplasm
Monomorphic ovoid hyperchromatic nuclei; inconspicuous mitotic activity
Background of mature adipose tissue; occasional lymphoid clusters
IHC: D2-40