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Pseudoatrophoderma Colli. Presented by Dr. Samuel Ayres Jr., and Dr. Samuel Ayres III.
O. M., a 31-year-old woman of Mexican ancestry, has had lesions on the neck, upper back, and beneath the breasts for the past eight years. These first appeared on the back of the neck, and when patient was seen for the first time in December, 1953, the eruption was confined to the back of the neck, consisting of an ill-defined, tranversely oval area about the size of a quarter, with a brownish-gray, somewhat hyperkeratotic appearance. At that time the patient was given five x-ray treatments of 75 r each locally, together with vitamin A orally in a dose of 50,000 units three times a day. In about six weeks, the eruption had practically disappeared.
The patient returned on Sept. 27, 1954, stating that the eruption had not remained entirely clear but was better until about four or