Sarcoidosis is another example of an immunologic process that causes widespread lymphadenopathy although the causative antigen has not yet been identified.

• 当感染的性质是全市性的，淋巴结病常也是全身的，如在结核病、布鲁菌病、传染性单核细胞增多症、肝炎、霉菌感染和弓形虫病。