When the nose becomes cancerous, the disease either begins in the outside, with a small tumor or wart, as in other parts of the face, or within, by a firm and somewhat painful polypous projection, which frets on the surface, and soon assumes the cancerous ulceration. The diagnosis of this disease is of the utmost importance; because if we mistake cancer for some other disease, we not only neglect the proper practice, but frequently are led to prescribe remedies which do infinite harm. If, on the contrary, we mistake another disease for cancer, we neglect the necessary means of cure, and may even be led to extirpate a part which might be easily cured by gentler treatment. Cancer may be confounded with scrophula, syphilis, and some other affections, which have received no particular name. There is an affection[109] which begins like cancer, by a hard schirrus, either of a gland, or still more frequently of one of the chronic tumors, which has been already mentioned as succeeding slow inflammation. This remains, for a considerable time, hard, and free from pain, and there is no puckering of the skin over it. By degrees, some part of the surface becomes of a purple or livid colour, and ulcerates. This ulcer remains long superficial; the edges are hard and rounded; the discharge is thin; the surface is glossy, and no distinct granulations can be seen; the pain is slightly smarting, but not burning, and instead of being fungous, the sore is slightly hollowed out below the level of the surrounding skin. By the continuance of this affection, the gland is apt to shrink and diminish in size; and generally where this takes place, the sore contracts and heals with a very puckered unequal cicatrix, having, in some places, a thick dark coloured scab covering it[110]. The neighbouring glands become affected; but they are soft, and rather resemble the spongoid inflammation than schirrous hardness: But I have never had an opportunity of observing them proceed the length of ulceration. If the continuance of the sore be long, the constitution is affected, and the patient becomes hectic[111]. This kind of ulcer may be distinguished from cancer, if we attend to the absence of the fungous, and peculiar appearance of the cancerous sore, and the want of the burning pain: But, before ulceration takes place, the two diseases may be confounded; because there are no certain characteristics of schirro-cancer. [109] To this specific affection, we may give the name of pseudo-cancer, for want of a better designation.