Following the immunosuppressive treatment, applied after renal transplantations, infectious diseases are seen more frequently. Inspite of more frequency of bacterial infections, they can usually be controlled because of their easier diagnosis and treatment. However the mycotic diseases are usually fatal because of their easier diagnosis and treatment. However the mycotic diseases are usually fatal because of the difficulty in their diagnosis and treatment. The immunosuppressive treatment agents are cytotoxic medicines, codticosteroids, antilymphocytic sera (or antithymocytic sera) and radiation. The mycotic infections, more often encountered are candidiasis, aspergillosis, nocardiosis, cryptococcosis and phycomycosis. There are certain medicines used today in the treatment of deep mycotic infections. These are amphotericine B, 5 fluorocytosine and imidazol derivatives.