A patient from Mérida / Venezuela discovered on the heel of his foot a pooly limited tumorous nodule with a localized hemorrhage. Before we describe the other details of the mycetomas we would like to give a definition of this disease. Its name earlier was used only for fungal infections, but nowadays after a reclassification the name is applied for bacterial infections also while the name mycetoma is maintained. They occur in three types and this tumor-like lesion is situated exclusively in the skin, eventually with formation of fistulae. In the abscesses present in the dermis are found the so called grains (accumulations of germs).