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The passage of blood from ruptured blood vessels into subcutaneous tissue, marked by a purple discoloration of the skin.

[New Latin, from Greek ekkhumōsis, extravasation, from ekkhumousthai, to extravasate : ek-, out; see ecto- + khumos, juice; see gheu- in Indo-European roots.]

ec′chy·mot′ic (-mŏt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Furthermore, heart is misshaped, flabby with greasy fat deposits on epicardium, petechial and ecchymotic hemorrhages on heart musculature and the incised myocardium shows congestion and suffusion with blood (Anjum 1990; Jaffery 1988; Kumar et al., 1997).
In the operation, medulla spinalis was observed as tense, edematous, and ecchymotic. The dura was opened at level T5-6 and the hematoma was removed from the intradural region of the suspected area of bleeding.
Both deer had gross lesions consistent with epizootic hemorrhagic disease, including multiorgan petechial and ecchymotic hemorrhages on serosal surfaces (5).
These bruises result in episodes of ecchymotic lesions which usually begins with burning, pain, and/or tenderness in the affected area.
Seventeen (17) dogs of different breed (Labrador-7, Mongrel-3, Spitz-3, German shepherd-2, Boxer and Great dane each one, sex (13 male and 4 female) and age group varied from 2 years to 5 years exhibiting signs of Ehrlichiosis and Babesiosis such as high temperature (104-106 (o)F), epistaxis, inappetance, ecchymotic hemorrhages on ventral abdomen hemoglobinuria were clinically examined.
There were confluent, purpuric, and ecchymotic patches over the extensor aspects of both lower limbs, which were palpable [Figure 1].
However, therapy related sarcomas have been known to have a distinct ecchymotic macular or purplish papular lesion around the breast.
PF is a rapidly progressive fatal condition, which presents as the sudden appearance of large ecchymotic areas and progresses to acral skin necrosis (Figure 1).
[20] Left hemiscrotum was 1 1/2 times larger than normal and the overlying skin was ecchymotic Burnard et al.
On exam, the left anterior calf and foot were ecchymotic and poikilothermic, and there were multiple tender, raised red lesions consistent with Osler nodes at the plantar surface of the right foot (Figure 1).
Clinical examination showed ecchymotic purpura of the lower limbs and petechial purpura of the upper limbs.