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May 1979

Lichen Planus Subtropicus vs Discoid Lupus Erythematosus

Arch Dermatol. 1979;115(5):640-641. doi:10.1001/archderm.1979.04010050064041

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To the Editor.—  In the September 1978 issue of the Archives (114:1399,1978), Lawrence M. Wells, MD, made a comment on my answer to Dr Tkach about differentiating lichen planus subtropicus (LPS) from discoid lupus erythematosus (DLE). I was not given the chance to answer him. This letter is in response to his comments. Dr Wells used Drs Lever and Schaumburg-Lever's book as reference in his letter to support his remarks. I contacted Dr Walter F. Lever and asked him if he would diagnose DLE in a nonscarring condition that has a band-like infiltration confined to the upper dermis and no follicular plugging. His answer was: "No, your two histologic pictures in the article in the Archives are typical of lichen planus and not LE. That is decisive. I accepted your article describing LPS and plan to mention it in the sixth edition." I hope this answer will satisfy both Dr

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