Contraindications to radiation therapy for tumors are divided into absolute and relative.
Absolute contraindications include:
General severe exhaustion of the patient – cachexia;
Stage IV tumors with the presence of distant metastases;
Radiation is not administered when the patient, in addition to the tumor, has decompensated forms of diseases of the cardiovascular system, gastrointestinal tract, kidneys, active tuberculosis, etc.;
Tumors that are disintegrating or perforated are not irradiated.
Relative contraindications include:
Hemoglobin level decreased to 50 g/L;
White blood cell count decreased to 2×10⁹/L;
Red blood cell count decreased to 3×10¹²/L;
Pathological skin conditions in the area of potential irradiation.
