SUPERFICIAL PERIVASCULAR DERMATITIS
INTERFACE - LICHENOID
| Lymphocytes predominate | Jagged epidermal hyperplasia,wedged hypergranulosis, compact orthokeratosis | Lichen planus |
| Eosinophils sometimes, focally thinned epidermis, focal parakeratosis | Lichen planus like drug eruption | |
| Individual necrotic keratinocytes, ballooning, spongiosis, pallor in upper part of epidermis, and parakeratosis | PLEVA | |
| Lymphocytes along adnexal structures in reticular dermis, individual necrotic keratinocytes | Lichen striatus | |
| Thinned epidermis, prominent granular layer, parakeratosis | Graft vs. host reaction | |
| Extravasated erythrocytes and/or siderophages | Lichenoid purpura of Gourgerot and Blum | |
| Necrotic keratinocytes, focal parakeratosis, residuum of solar lentigo sometimes | Lichen planus-like keratosis | |
| Cornoid lamella | DSAP | |
| Lymphocytes within epidermis, scant spongiosis | Mycosis Fungoides, plaque | |
| Histiocytes predominate | Discrete focal in papillary dermis | Lichen nitidus |
| Discrete focal and, sometimes, confluence of foci in reticular dermis | Sarcoidosis | |
| Langerhans' cells predominate | Large cells, crenellated outlines of large pale nuclei, abundant amphoilic cytoplasm | Letterer-Siwe disease |