Case 176. 

Leishmania tropica infection (cutaneous leishmaniasis) (64 y-o M)
       
  Biopsy from a 4 x 2 cm painless neck nodule with central ulceration in a Japanese man who traveled in India  
       

 

  In the deep dermis, foreign body granulomatous reaction is observed, with only a few pathogens demonstrated (HE).