The capillary collagen of several human keloids was studied. In the majority of the preparations, the collagen had the appearance of an amorphous mass where the amorphous material of the intercellular component was mixed with the newly formed collagen. The vessels of these regions offered neither definite form nor structure but rather a mixture of well-formed fibers and of other fibers still in the process of formation. The principal characteristic of the newly formed vascular collagen was its distribution in the form of rings, each of which was united in turn to other rings. Fibers could be seen radiating from the periphery of these rings and served to join the rings to the surrounding intercellular amorphous substance. The vessels presented different disposition and structures depending upon their grade of development, which is never complete.
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