Kikuchi-Fujimoto disease (KFD) - rare, self-limiting, mainly young adults in Japan with Cx LNs (usually posterior Cx nodes rather than anterior) and fevers, and rarely rubella-like rash or splenomegaly
the finding of enlarged posterior cervical lymph nodes is generally more diagnostic in excluding bacterial tonsillitis than the far more commonly enlarged anterior LNs as the common differentials are reduced to:
Kikuchi-Fujimoto disease (KFD) - rare, mainly young women with Cx LNs (60-90% have 1-2cm post Cx nodes) and fevers, and rarely rubella-like rash or splenomegaly, Dx on biopsy; possible future SLE risk;