[Diagnostic value of electron microscopy in dermatology].

Basing themselves on their personal experience, the authors stress the main indications and the value of electron microscopy in dermatology. In some cases it provides an indispensable adjunct to standard light microscopy (tumor pathology, cutaneous lymphoma, collagenosis, storage diseases, etc). In other cases, it provides greater insight into dermatological affections, such as pigmentation disorders or bullae. Ultrastructural studies should therefore often be included in a thorough morphological examination of a skin biopsy.