that are subject to extreme force the over-stretching of scars may lead to further injury and inflammation or may cause rupture and complete failure of the tissue.
Suppurative Inflammation
In cases of injury that involve a pathogen, suppurative inflammation is seen. Suppurative inflammation is characterized by the presence of large amounts of purulent exudate. Purulent exudate is composed of both living and dead leukocytes, necrotic pathogen and necrotic tissue cells. If the suppurative exudate is localized and circumscribed it is said to be an .
Ulcers
An ulcer is defined as a local defect or pit on the surface of an organ or tissue. Ulcers are classified as superficial lesions though they may penetrate deep into a tissue. A perforating ulcer may even penetrate the entire thickness of an organ such as the stomach or intestine. Ulcers form as necrotic tissue on the surface is sloughed away by friction or bodily fluids. Ulcers can be caused by mechanical as seen in girth galls and saddle sores or can be the result of irritation from chemicals or pathogens, as seen in gastrointestinal ulcers. If the etiological agent is removed promptly the ulcers will most likely fill in with normal tissue and organ function will not be greatly impaired. In cases where the ulcer becomes chronic, fibroblasts move into the site and secrete tissue into the defect. Once fibrosis of an ulcer has occurred it often becomes unresponsive to treatment even if the causative agent is removed.
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