Chemotherapy is a method of treatment based on either oral or intravenous administration of a preparation – cytostatic drug – to the patient. The patients of the Center for Diagnostics and Oncology Therapy in Zamość who are eligible for chemotherapy are referred to the Clinical oncology Ward of the Voivodeship Hospital in Zamość. Chemotherapy is performed in the outpatient mode, that is, one-day procedures, as well as in hospitalization mode, if the patient’s condition requires continuous medical care. Patients undergoing a combined therapy, chemotherapy in conjunction with radiation therapy, are referred for irradiation to NU-MED Center in Zamość.