An introduction to clinical medicineSix lectures on the method of examining patients; percussion, auscultation, the use of the microscope, and the diagnosis of skin diseases . 78.) In scrofulous andunhealthy sores, the pus is more or less broken down, orresembles tubercle corpuscles. (Fig. 30.) The epithelial ulcer is very common on the under lip,commencing in the form of a small induration or wart,but rapidly softening in the centre, assumes a cup-shapeddepression, Avith indurated margins, Avhich extend in acircular form more or less over the cheek and chin. An APPLICATIONS OF THE MICROSCOPE
An introduction to clinical medicineSix lectures on the method of examining patients; percussion, auscultation, the use of the microscope, and the diagnosis of skin diseases . 78.) In scrofulous andunhealthy sores, the pus is more or less broken down, orresembles tubercle corpuscles. (Fig. 30.) The epithelial ulcer is very common on the under lip,commencing in the form of a small induration or wart,but rapidly softening in the centre, assumes a cup-shapeddepression, Avith indurated margins, Avhich extend in acircular form more or less over the cheek and chin. An APPLICATIONS OF THE MICROSCOPE TO DIAGNOSIS. 119 examination of the softened matter sometimes exhibits epi-thehal cells, mingled with fibre or fibro-plastic cells, asin Figure 80. At other times the cells are enlarged,flattened out, and more or less loaded with fat molecules Fig. 78. Fig. 79. \ Fig. 78 —Fibre cells passing into fibres. Fig. 79.—Fibrous tissue formed from fibre cells. and granules. (Figure 81.) These growths, though gener-ally denominated cancer, are at once distinguished by a mi-croscopic examination, as may be ascertained by comparing Fig. 80. Fig. 81. i^reivi-l&fef®i>. Fig. 80.—Epithelial and fibre cells, from the surface of an ulcer of the 81.—Altered epithelial cells, from the surface of another labial ulcer. 120 APPLICATIONS OF TUE MICROSCOPE TO DIAGNOSIS. the above figures with groups of cancer cells. The so-calledchimney-sweeps cancer of the scrotum is essentially asimilar formation, consisting externally of flattened epithelial Fig. 82.
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