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A small plug of tissue approximately 2 to 6mm is removed with a specific cutting instrument with or without sutures to close the site. Most common sin biopsy
Punch biopsy
Removal of only the part of the lesion that is raised above the surrounding tissue using a scalpel or razor blade with no suturing.
Shave biopsy
A larger and deeper specimen is obtained and suturing is required.
Excisional biopsy
What is psoriasis characterized by?
-scaly dermal patches and caused by overproduction of keratin.