Case 189. Onchocercosis (45 y-o F)

　 　 　 　
　
Excised subcutaneous nodule in the neck of a Mexican female
 　
　 　 　 　

　

 　 The uterus is filled with numerous microfilariae. The cuticles are thick, while the muscle layer is thin. Characteristic skin lesions in onchocercosis include scrotal elephantiasis and onchocercal dermatitis.