Which of the following is an absolute contraindication for tooth extraction

The patients with absolute contraindications for tooth extraction are not allowed to extract teeth, regardless of any special reasons. There are many absolute contraindications, such as hypertension, coronary heart disease, angina pectoris, liver and kidney dysfunction, leukemia, aplastic anemia, thrombocytopenia, etc. In addition, malignant tumors and self-consuming diseases are not allowed to extract teeth.