We describe a patient with facial cellulitis/erysipelas due to cowpox virus inoculation in the respiratory epithelium of the nose. A cytopathic agent was isolated in cell culture, and the diagnosis of ...

Histiocytic necrotizing lymphadenopathy (HNL), a disease of unknown cause, is characterized pathologically by the presence of plasmacytoid dendritic cells (pDCs), which are frequently mixed with ...

Lymphadenitis is an infection in one or more lymph nodes, which makes them enlarged. The lymph nodes may be very painful, and symptoms may include chills and fever. Treatment typically involves ...