Mycosis fungoides
Plaque
| Superficial or superficial and deep perivascular infiltrate of lymphocytes |
| Lymphocytes in lichenoid array, if only in foci; some dermal papillae stuffed with lymphocytes sometimes |
| Some lymphocytes with nuclei having cerebriform outlines |
| Wiry bundles of collagen arranged haphazardly in zones of lichenoid infiltration of lymphocytes |
| Some lymphocytes within the epidermis larger than those within the dermis |
| Lymphocytes within the epidermis, both those disposed as solitary units and those in clusters, accompanied by scant spongiosis |
| Lymphocytes disposed as solitary units and those arranged in clusters sometimes found at any level of the epidermis, including the granular and cornified layers |
| Epidermis sometimes psoriasiform |
| Cornfied layer sometimes orthokeratotic or parakeratotic, or both |