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To the Editor
In the Archives of Dermatology (93:54 [Jan] 1966) there was an article by Lumpkin and Helwig on "Solitary Lichen Planus."It is possible that these authors may have misinterpreted the clinical and histological features of flat senile keratosis as seen on the extremities, especially the upper extremities which are exposed to the weather, and especially on the dorsal surface of the forearms and wrists. It is to be noted that seven of their lesions were from the upper extremity in this location and two were from the legs, an area which may or may not have had exposure to the sun, etc.Although their histopathological studies could be considered compatible with lichen planus, nowhere do we see the mention of eosinophilic bodies that have been discussed by Thyresson and Moberger (Cytologic Studies in Lichen Ruber Planus, Acta Dermatovener37:191, 1957) and also presented previously by
Francis A. Ellis. LICHEN PLANUS. Arch Dermatol. 1966;94(1):109–110. doi:10.1001/archderm.1966.01600250115028