A Case for Diagnosis: Swimming-Pool Granuloma (Tuberculosis Cutis?). Presented by Dr. Gerald F. Machacek for Dr. Maurice J. Costello.
A 20-year-old student nurse has had a torpid, localized eruption on the skin of the anterior surface of the right knee-joint for the past year. The eruption appeared as a very small nodule when she injured her knee in falling on a sandy beach several weeks previously. Later satellite lesions appeared. These enlarged and eventually coalesced to form a lesion which could cover the surface of a 50-cent piece if they were all put together. There is a linear tattooed area running transversely through this lesion as a result of an injury sustained in the same location when she was a child.
Diascopic pressure reveals apple-jelly nodules. There is a tendency toward satellization. There is no local or generalized discomfort or systemic effect. Roentgenograms of the lungs were negative
Lewis GM, Costello MJ. NEW YORK DERMATOLOGICAL SOCIETY. AMA Arch Derm. 1957;76(6):812–816. doi:10.1001/archderm.1957.01550240130034
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