Bone marrow smear and bone marrow biopsy needle

Bone marrow smear is used to determine the degree of nucleated cell hyperplasia. Iron staining and different histochemical staining of bone marrow smear can provide diagnostic basis for iron deficiency anemia and all kinds of leukemia. The proliferation of nucleated cells in bone marrow tablets was observed at low magnification by selecting the part with uniform cell distribution, and the proliferation degree of nucleated cells was estimated according to the density of nucleated cells or the ratio of nucleated cells to mature red blood cells in bone marrow tablets. Classify and count 100-200 white blood cells, calculate the percentage of all kinds of white blood cells, and describe the red blood cell morphology, platelet number and distribution. If you see young red blood cells according to the classification of 100 white blood cells in the number of young red blood cells to report, and explain its stage nucleated cell classification count; Calculate the grain and red ratio; Observe whether there are other special cells and parasites.

A bone marrow biopsy, or a bone marrow biopsy, uses a special needle to take a small cylindrical piece of bone marrow about 0.5 to 1 centimeter long for pathological examination. The operation method is exactly the same as that of bone marrow biopsy. The material removed keeps the complete bone marrow tissue structure, which can make up for the deficiency of bone marrow puncture. It can not only understand the composition of bone marrow cells and the distribution of original cells, but also observe the cell morphology, which is convenient to make pathological diagnosis, diagnosis of aplastic anemia, bone marrow dysplasia