. Elementary and dental radiography . aph by Pancoast, of Philadelphia.) 41. to Locate Stones (Calculi) in the Salivary Ducts or Glands. The history of this case given me by Dr. SidneyTifl. 251. Lange, of Cincinnati, Ohio, is as follows: Patient, female, age about forty, suffered recurrent attacks ofswelling and pain in the region of the submaxillary gland on one attacks seemed to follow the taking of sour foods. A radiograph(Fig. 251) was made. The arrow points to a stone in the submaxillaryduct. Because the patient had had a stone removed from the same ductseveral years previously,
. Elementary and dental radiography . aph by Pancoast, of Philadelphia.) 41. to Locate Stones (Calculi) in the Salivary Ducts or Glands. The history of this case given me by Dr. SidneyTifl. 251. Lange, of Cincinnati, Ohio, is as follows: Patient, female, age about forty, suffered recurrent attacks ofswelling and pain in the region of the submaxillary gland on one attacks seemed to follow the taking of sour foods. A radiograph(Fig. 251) was made. The arrow points to a stone in the submaxillaryduct. Because the patient had had a stone removed from the same ductseveral years previously, and because the gland was considerably thick-ened, simple removal of the stone was thought to be contraindicated, anda more radical operation involving the removal of the entire gland wasperformed. 218 DEXTAL RADIOGRAPHY 42. Tn Cases of Bone Cysts. A cyst is an organized structure consisting of a sac-like wall to-gether with its contents, especially one of pathological formation orabnormal development.—Appletons Medical The dark shadow to which the arrow points is a bone , of Philadelphia.) (Radiograph by According to this definition all chronic alveolar abscesses are cysts—hone cysts, because they occur in bone. But the name cyst is usually notapplied until the abscess sac assumes a great size. The abscess in Fig.[93 i- large enough to he called a cyst, in the generally used sense of theterm. This radiograph shows a large cyst in the lowerj\%. 252. jaw. Tlie two roots of the lower first molar are doubtless responsible for tin- cyst cyst case- there i- often considerable and disfiguring enlargementof the bone, and such cases are spoken of as cystic tumors, a tumor, ofcourse, being simply an abnormal enlargement or growth. THE USES OF THE RADIOGKAIII IN DENTISTRY 219 A man, age about thirty-seven, was referred to Tigs. 253 and 254. the college clinic to have a growth on the lower jaw cut off. There was no growth to cut off. There was a
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