According to Unna,1 the myomatous tumors of the skin all arise from non-striated muscular tissue. Of the various classifications proposed, that of Victor Babes,2 is probably the best and most scientific, although Besnier's3 division, in which the growths are separated into two general classes, simple myomas and dartoic myomas, has been widely adopted. Crocker,4 also, would recognize only two varieties, superficial and deep. Neumann's5 suggestion that the various types be grouped, pathologically, under true myomas and cavernous myomas has not met general acceptance.
Babes would distinguish:
I. Myomas springing from the vessel wall by proliferation of the muscular elements (angiomyoma cutis). These growths are usually circumscribed, solitary and deeply seated. In relation to the nerves they sometimes form irritable tumors (ganglion dolorosum myomatosum).
II. Hyperplasias of the arrectores pili:
1. As portions of vascular nevi (Virchow).
2. Forming multiple tumors.
III. Neoplasms derived from the
SUTTON RL. XANTHOMA TUBEROSUM MULTIPLEX VULGARIS MISTAKEN FOR MYOMATOSIS CUTIS DISSEMINATA. JAMA. 1912;LIX(3):178–180. doi:10.1001/jama.1912.04270070179007
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