sinus expansion

sinus expansion

A nonspecific term for an increase in nodal sinus volume.
Aetiology
Sinus histiocytosis, increased clear cells (storage disease, such as Gaucher disease), Rosai-Dorfman disease (sinus histiocytosis with massive lymphadenopathy), haemophagocyic syndromes, vascular proliferations (e.g., Kaposi sarcoma), Castleman’s disease (plasma cell variant).