What procedure in which layers of growth are removed and examined microscopically?

The procedure you are referring to is called a "skin biopsy," specifically a type known as a "shave biopsy." In this method, layers of skin growth are removed and examined microscopically to diagnose conditions such as skin cancer or other dermatological issues. The removed tissue is sliced into thin sections, allowing pathologists to analyze the cellular structure and identify any abnormalities. This technique helps in determining the presence and type of skin lesions.