A histological examination can help to determine the pathology of a mole, wart, or other skin formations, to clarify the diagnosis. The test is performed in a laboratory: the doctor takes a piece of unhealthy skin and sends it to the test laboratory for histological examination. 

Benefits of the examination

Examination of a skin formation helps to diagnose oncological diseases (melanoma, basal cell carcinoma, squamous cell skin cancer, skin lymphoma, etc.).
The test can help identify autoimmune, chronic, and other skin diseases (herpes simplex, vesicular pemphigoid, during herpes dermatitis, psoriasis, etc.).
The histological examination helps to rule out or confirm the diagnosis and prescribe appropriate treatment. 

How is the procedure performed?

A biopsy can be done by taking a small amount of the skin formation with a special instrument, or an excision when the doctor removes the entire formation. Histological examination of the formation is performed in a laboratory, where the tissue is divided into microscopically sized layers, stained, and tissue elements are observed through a microscope.