Subsets of mast cells defined by morphological criteria.
| Cell Type . | Morphological Properties . |
|---|---|
| Metachromatic blast | Blast-like, few metachromatic granules |
| Promastocyte = Atypical MC type II | Mostly immature mast cells with bi- or multi-lobed nuclei, often hypogranulated |
| Atypical mast cell type I | Mast cells in which 2 of the 3 following morphological aspects are found: a. cytoplasmic extensions (spindle shape) b. hypogranulated cytoplasm c. oval decentralized nucleus |
| Mature mast cell = typical tissue mast cell | Round cell with round central nucleusand well-granulated cytoplasm |
| Cell Type . | Morphological Properties . |
|---|---|
| Metachromatic blast | Blast-like, few metachromatic granules |
| Promastocyte = Atypical MC type II | Mostly immature mast cells with bi- or multi-lobed nuclei, often hypogranulated |
| Atypical mast cell type I | Mast cells in which 2 of the 3 following morphological aspects are found: a. cytoplasmic extensions (spindle shape) b. hypogranulated cytoplasm c. oval decentralized nucleus |
| Mature mast cell = typical tissue mast cell | Round cell with round central nucleusand well-granulated cytoplasm |