In 1891, Schweninger and Buzzi1 published their report of "Multiple Benign Tumor-Like New Growths of the Skin." Briefly, according to the authors' description, the condition is characterized by the appearance of numerous white to slate-colored, bladder-like lesions beneath the skin, some of which have fine telangiectases coursing over them. The eruption involves the upper part of the back, chest, shoulders and arms. The lesions vary in size from that of a lentil to that of a sixpence and on the sides of the thorax are arranged along the lines of cleavage. By pressure with the tip of the finger, most of the formations can be forced into the deeper skin, producing a shallow pit on the surface, the tumor reappearing, however, like a ventral hernia when the pressure is released. The disease is slowly progressive, new lesions occurring as the older ones involute spontaneously, leaving soft, flat scars.
BUTTERWORTH T. MULTIPLE BENIGN TUMOR-LIKE NEW GROWTHS OF THE SKIN: REPORT OF A CASE. Arch Derm Syphilol. 1934;29(6):893–898. doi:10.1001/archderm.1934.01460120090010
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