Infiltration

(in-fil-tra' -shun). The abnormal diffusion of any fluid from without into an organ or ti ue, affecting it mechanically so as to destroy its function. I. of Bone, a tuberculous infiltration of bone, consisting either of matter that becomes puri form, or else of gray cancellous matter. I. Calcareous, deposits of lime or other calcium, salts within any ti ue of the body. I., Cellular, the primary exudation into a ti ue, conveying white corpuscles. I.. Fatty, the presence of oil or fat globules in the interior of a cell. I., Gray, an opaque condition of the lung found after death from acute rculosis, the lung being of a dirty ash-gray color, with no appearance of lobulation or of the normal pulmonary structure. I., Plastic, that of a character from which new normal growth may develop. I., Red, a form of infiltration of the lung in acute tuberculosis in which the lung presents a more or le hyperemic appearance, and is soft and granular. I., Sanguineous, an extravasation of blood. An ecchymosis. I., Tuberculous, a confluence of tuberculous granulations.