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December 1957


AMA Arch Derm. 1957;76(6):812-816. doi:10.1001/archderm.1957.01550240130034

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

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