Histopathology of the nail.

Patients are often very concerned about the diagnosis and treatment of an unsightly nail problem. Nail biopsy findings can enhance the accuracy of clinical diagnosis, just as skin biopsy is often crucial to the diagnosis of skin disease. In addition, nail biopsy may be necessary for the early detection of a malignant tumor. A skillfully performed adequate nail biopsy, handled and processed and interpreted properly, can be an important part of a dermatologist's armamentarium in providing excellent comprehensive patient care.