Abstracts from Medical Literature Radiology: Lateral Atlanto-Axial Displacement in Spinal Injuries. George Jacobson and Denis C. Alder (Radiology, September, 1953) note that lateral offset of the atlanto-axial joint occurs more frequently with fractures and dislocations of the atlas and axis than in other spinal injuries. Unilateral medial and bilateral offset may result from normal movement, but some cases may represent rotatory dislocations. Bilateral spread is likely due to atlas fracture. Radiologists should examine the atlas and axis carefully when lateral offset is seen on X-rays. Significance of a Solitary Mass in the Lung. C. Allen Good, R. T. Hood, Jr., and J. R. McDonald (Am. J. Roentgenol., October, 1953) state that the presence of calcium in a lung mass is the only reliable sign of benignancy. Other features are not reliable. Bronchoscopic biopsy and sputum cytology may indicate malignancy, but they do not change the need for immediate surgery. Radiologists should look for calcification in the mass. Pulmonary Interstitial Emphysema. G. Herrnheiser and J. P. Whitehead (Brit. J. Radiol., October, 1953) note that this condition is more common than realized. It can occur after chest trauma without rib fractures and is often associated with pulmonary hemorrhage. Radiological signs include translucencies in the lung. Thoracic Renal Ectopia. H. Stephen Weens and M. Harlan Johnston (Am. J. Roentgenol., November, 1953) state that a broad-based thoracic mass near the diaphragm may indicate high renal ectopia. Proper urographic studies can differentiate a thoracic kidney from other masses. Radiologists should focus on the kidney's position relative to the spine, ribs, and diaphragm. Peptic Ulcer, Gastric Carcinoma and Arteriosclerosis. Arthur Elkeles (Am. J. Roentgenol., November, 1953) notes that gastric ulcers are frequently associated with arteriosclerosis. Calcification of the abdominal aorta is a radiological sign of benign gastric ulcers. The presence of calcification suggests benignity, while its absence raises suspicion of malignancy. Bone Changes in the Skull in Dystrophia Myotonica. J. E. Caughey (J. Bone & Joint Surg., August, 1952) reports that dystrophia myotonica is associated with thickened calvarium, hyperostosis interna, small pituitary fossa, and extensive sinuses. Physical Therapy: A New Method of Treatment for Arthritis. N. S. Finzi (Brit. J. Radiol., September,Abstracts from Medical Literature Radiology: Lateral Atlanto-Axial Displacement in Spinal Injuries. George Jacobson and Denis C. Alder (Radiology, September, 1953) note that lateral offset of the atlanto-axial joint occurs more frequently with fractures and dislocations of the atlas and axis than in other spinal injuries. Unilateral medial and bilateral offset may result from normal movement, but some cases may represent rotatory dislocations. Bilateral spread is likely due to atlas fracture. Radiologists should examine the atlas and axis carefully when lateral offset is seen on X-rays. Significance of a Solitary Mass in the Lung. C. Allen Good, R. T. Hood, Jr., and J. R. McDonald (Am. J. Roentgenol., October, 1953) state that the presence of calcium in a lung mass is the only reliable sign of benignancy. Other features are not reliable. Bronchoscopic biopsy and sputum cytology may indicate malignancy, but they do not change the need for immediate surgery. Radiologists should look for calcification in the mass. Pulmonary Interstitial Emphysema. G. Herrnheiser and J. P. Whitehead (Brit. J. Radiol., October, 1953) note that this condition is more common than realized. It can occur after chest trauma without rib fractures and is often associated with pulmonary hemorrhage. Radiological signs include translucencies in the lung. Thoracic Renal Ectopia. H. Stephen Weens and M. Harlan Johnston (Am. J. Roentgenol., November, 1953) state that a broad-based thoracic mass near the diaphragm may indicate high renal ectopia. Proper urographic studies can differentiate a thoracic kidney from other masses. Radiologists should focus on the kidney's position relative to the spine, ribs, and diaphragm. Peptic Ulcer, Gastric Carcinoma and Arteriosclerosis. Arthur Elkeles (Am. J. Roentgenol., November, 1953) notes that gastric ulcers are frequently associated with arteriosclerosis. Calcification of the abdominal aorta is a radiological sign of benign gastric ulcers. The presence of calcification suggests benignity, while its absence raises suspicion of malignancy. Bone Changes in the Skull in Dystrophia Myotonica. J. E. Caughey (J. Bone & Joint Surg., August, 1952) reports that dystrophia myotonica is associated with thickened calvarium, hyperostosis interna, small pituitary fossa, and extensive sinuses. Physical Therapy: A New Method of Treatment for Arthritis. N. S. Finzi (Brit. J. Radiol., September,