*'''Granulomatous disease''' results in monocytosis as monocytes are recruited to contain certain types of bacteria (namely ''[[Mycobacteria spp.]]'', ''[[Nocardia|Nocardia spp.]]'', ''[[Actinomyces species - Overview|Actinomyces]]'' and ''[[Rhodococcus equi]]'') or foreign objects. Severe granulomatous disease may also result in hypercalaemia as differentiated macrophages acquire the ability to produce activated vitamin D metabolites. | *'''Granulomatous disease''' results in monocytosis as monocytes are recruited to contain certain types of bacteria (namely ''[[Mycobacteria spp.]]'', ''[[Nocardia|Nocardia spp.]]'', ''[[Actinomyces species - Overview|Actinomyces]]'' and ''[[Rhodococcus equi]]'') or foreign objects. Severe granulomatous disease may also result in hypercalaemia as differentiated macrophages acquire the ability to produce activated vitamin D metabolites. |