infiltrate

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Related to infiltrative: infiltrative cardiomyopathy

infiltrate

1. Pathol any substance that passes into and accumulates within cells, tissues, or organs
2. Pathol a local anaesthetic solution injected into the tissues to cause local anaesthesia
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Infiltrate

 

an accumulation in bodily tissues of cellular elements admixed with blood and lymph. Inflammatory and tumorous infiltrates occur most often.

An inflammatory infiltrate consists chiefly of polymorphonuclear leukocytes (suppurative infiltrate), erythrocytes (hemorrhagic infiltrate), lymphoid cells (round cell infiltrate), and histiocytes and plasma cells (histiocyte-plasma cell infiltrate). These infiltrates may be resolved, may liquefy, or may undergo sclerosis and form caverns, abscesses, scars, and so forth.

A tumorous infiltrate consists of tumor cells of different kinds (carcinoma, sarcoma); it is a manifestation of the infiltrating growth of a tumor. When an infiltrate forms, the tissue enlarges, changes color, and becomes harder and sometimes painful. In surgical practice, an infiltrate is an induration that develops in tissues when they become saturated with an anesthetic.

V. V. SEROV

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Hidradenocarcinoma has features similar to benign hidradenoma, including clear cell change and duct formation, but with the additional presence of marked nuclear atypia, brisk mitotic activity (usually greater than 4/10 high-power fields) including atypical mitotic figures, broad zones of necrosis, and/or infiltrative growth.
In summary, this report describes multiple infiltrative intraosseous lipomas in a cockatoo with a humerus fracture.
Atypical Sites of Deeply Infiltrative Endometriosis: Clinical Characteristics and Imaging Findings.
(C) The neoplasm was composed by an infiltrative proliferation of neoplastic cells arranged in bundles and whirls.
Yuzefpolskaya, "Infiltrative cardiomyopathies," Clinical Medicine Insights: Cardiology, vol.
Caption: Figure 3: Cervical biopsy (40X): the infiltrative carcinoma is largely distorted by crush artifact.
A total of 54 patients were included, 34 with deep infiltrative endometriosis (DIE) and 20 for tubal ligation.
Microscopically the histologic growth pattern was defined as infiltrative if the penetration of the tumor cells into the surrounding tissue was observed (Figure 1(d)).
There are two known subtypes of ALCL of the breast: (a) in situ, in which disease proliferation is confined to the capsule and is often associated with seroma as in our patient, and (b) infiltrative, mostly associated with tumor mass with cells infiltrating the capsule and adjacent tissues [2].
Caption: FIGURE 3: Hematoxylin and eosin specimen demonstrating infiltrative cells with high mitotic and apoptotic indices.