Even though differentials usually cannot be done in the center of the marrow particles, several things can be observed that are not seen elsewhere. In this slide there is a capillary or arteriole running across the field. It is very common to see small blood vessels that are distinguished by their elongated lining cells. If the blood vessel is disrupted, the nuclei of vascular cells generally become more rounded and may even appear as clumps of cells. These clumps must not be mistaken for malignant cells. The nuclei have no cytoplasm and should therefore be disregarded.
Course Section: 06. Microscopic Examination of the Bone Marrow
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