Case 215. Toxoplasma lymphadenitis (33 y-o M)
         
    Biopsied cervical lymph node showing histologic features of Piringer's lymphadenitis    
         
   
Key words : Toxoplasma gondii, Piringer's lymphadenitis, AIDS
   
     
 
     
Small, iregular-shaped epithellioid granulomas are distributed in the paracortex. Along the sinus, features of monocytoid B-cell hyperplasia are observed (HE). Usually, cysts of Toxoplasma gondii are hardly identified in the lesion.   Reference case 215A
Biopsied lymph node in an HIV-positive 32 y-o Thai male (HE). In the cytoplasm of multinucleated giant cells, tachyzoites of T. gondii are clustered. Systemic toxoplasmosis is a serious complication in AIDS patients (refer to cases 96, 126 and 231).