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 　
　 　 　 　

　

 　 The upper to mid-dermis is densely filled with vacuolated macrophages (HE, low power).