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Module title = Tutorial: Derm Morphology
Lesson title = Ulceration
This is lesson 15 of 18 in this module
Ulceration
A secondary morphology
Definition:
Full thickness loss of the epithelium (as opposed to partial as in an erosion)
May also include loss of dermis or subcuticular tissue (the fatty layer below the dermis)
**Please note**: Although ulcer is considered a secondary morphology; frequently the ulceration results in loss of the initial primary morphology. As such, often with ulcerated lesions, no primary morphology can be identified and we simply refer to them as "ulcers".
General Explanation for Ulcers:
ulcers can be caused by numerous factors including:
trauma
pressure
vasculitis -- inflammation of the vessels leading to disrupted blood flow to the skin and necrosis of epidermis and dermis, or even deeper tissues
infection
poor arterial blood flow
poor venous blood flow
Examples:
Neuropathic ulcers --often seen in patients with neuropathy secondary to diabetes mellitus; most often ulcers are on the feet
Arterial venous insufficiency ulcers
Pyoderma gangrenosum -- very painful ulcerating disorder frequently associated with inflammatory bowel disease
Lesson 15 of 18
That was the last lesson!