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To the Editor:—In response to inquiries regarding my report, "Squamous Cell Epithelioma in Psoriatic Patches" (Arch. Dermat. & Syph.38:241 [Aug.] 1938), I wish to add that the patient never ingested any arsenic and never received any treatment. Whereas the clinical picture simulated that of superficial epitheliomatosis or arsenical epithelioma, this probably was because the psoriatic patches and cells were undergoing malignant change, the patient having had definite psoriasis for eighteen years.
Charache H. SQUAMOUS CELL EPITHELIOMA IN PSORIATIC PATCHES. Arch Derm Syphilol. 1938;38(5):780. doi:10.1001/archderm.1938.01480170104012
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