. Roentgen interpretation; a manual for students and practitioners . Fig. 69.—Dentigerous cyst. CYSTS 95 elsewhere. A particular sort of osteomyelitis occurs with phos-phorous poisoning; the bone becomes increased in density andthickness as a result of new bone production which is followed laterby suppuration and necrosis represented by irregular occurs occasionally in the form of an irregular mottlingof the bone due to extensive spotted rarefaction. Tumors of all sorts may be encountered—giant-cell sarcoma and themore malignant forms of sarcoma, carcinoma and hypernephrom
. Roentgen interpretation; a manual for students and practitioners . Fig. 69.—Dentigerous cyst. CYSTS 95 elsewhere. A particular sort of osteomyelitis occurs with phos-phorous poisoning; the bone becomes increased in density andthickness as a result of new bone production which is followed laterby suppuration and necrosis represented by irregular occurs occasionally in the form of an irregular mottlingof the bone due to extensive spotted rarefaction. Tumors of all sorts may be encountered—giant-cell sarcoma and themore malignant forms of sarcoma, carcinoma and hypernephroma,for example. Their appearance is identical with that of similargrowths in other flat bones. In addition, the jaw is the seat of a. Fig. 70.—Cystoma of the jaw. tumor peculiar to it, the odontoma, which is a dense mass made up ofvarious tooth tissues and may be attached to a tooth or be composedof several teeth fused together. Sometimes they take the form ofundefined masses of considerable density, which continue to growand develop into large deforming tmnors. Salivary calculi must bementioned in any consideration of the teeth. They cast dense roundor oval shadows seen in the position of the salivary glands or projected upon the mandible in oblique views they mustnot be mistaken for areas of density in the bone. The shadows ofcalcified glands often appear in tooth plates. They are spotted 96 SKULL mulberry-like shadows, characteristic of calcified glands tip of an nnnsually long styloid process may be projected uponthe upper molar region and be mistaken for an extra tooth root orsupernumerary tooth. BIBLIOGEAPHY. Heuer, G. J., and Dandy, ^Y. E.: Roentgenography in the locahzation of brain
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