Tumor forms of lupus erythematosus are rare variants of the discoid type. They may be of either superficial or deep variety, depending on their sites of origin in the skin; the former arises in the cutis and the latter in the subcutis. Suppurative or ulcerative phenomena never develop in these tumors, regardless of duration. Superficial lesions are characterized by a distinctive bright red color. These characteristics are important for clinical diagnosis, but the latter should always be subordinate to microscopic study.
I believe all tumor forms of lupus erythematosus are caused directly by the tubercle bacillus, and it was this concept which prompted the use of tuberculin in the following case.
REPORT OF CASE
History.—A married Negress aged 28 entered the clinic on March 13, 1941 complaining of a red facial tumor which had its inception three years previously.
Both parents had been treated for syphilis, but the patient