since the mast cell is regarded as a more highly differentiated form of the same cell-type as macrophages/monocytes , on the basis of the scintigraphic results presented , urticaria pigmentosa can be regarded pathogenetically as a hyperplasia of the macrophages of the bone marrow organ , with increased differentiation in mast cells .
C0024880
mast cell
C0042111
urticaria pigmentosa