Clinical lectures on the principles and practice of medicine . 212 PRINCIPLES OF several pounds. In the latter case the central portions seem to consistof a fibrous structure, probably an hypertrophy of the dermis, whichis supplied with blood-vessels (Fig. 229). Their surface sometimesis smooth, resembling thickened epidermis; at others it is lobulated,composed of rounded groups of papillae, resembling externally a cauli-flower. These tumors, when small, are almost wholly composed ofepithelial scales, which assume a square or elongated form, their nuclei being for the most part very
Clinical lectures on the principles and practice of medicine . 212 PRINCIPLES OF several pounds. In the latter case the central portions seem to consistof a fibrous structure, probably an hypertrophy of the dermis, whichis supplied with blood-vessels (Fig. 229). Their surface sometimesis smooth, resembling thickened epidermis; at others it is lobulated,composed of rounded groups of papillae, resembling externally a cauli-flower. These tumors, when small, are almost wholly composed ofepithelial scales, which assume a square or elongated form, their nuclei being for the most part very the larger growths the surface issimilarly composed, but internally wefind more or less areolar tissue, suppliedwith blood-vessels. On snipping offa small isolated papilla from such atumor, and examining it entire, it pre-sents a conical or round projection,covered with epidermic scales, as 227. When a vertical section ofit is made, we observe a vascular loop,surrounded by basement membrane, external to which are layers ofepithelial cells varying in thickness (Fig.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmedicine, bookyear187
