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A Case for Diagnosis. Presented by Dr. Strauss.
A man, aged 20, had a birthmark about the size of a quarter, a brown pigmented mark, which in the last few years had grown to the diameter of a baseball. After hearing Dr. Klauder's paper in Erie on Tuesday, the case struck me as interesting. I should like to have his opinion on it.
Dr. Klauder: This picture of a pigmented nevus, the surface of which is studded with fibroma-like nodules is unusual. I have never seen a similar case, and cannot recall seeing a similar description in the literature. The history of enlargement and the appearance of nodules justify the thought that the condition is malignant. However, I do not believe it is. The long duration from four to six years, the absence of glandular involvement and the fact that the nodules are neither deeply pigmented nor infiltrated are