;-rays. Differential Diagnosis in radioscopy is a matter of reflex,shadow, and motion. A bright reflex indicates a large, empty cavityor a large pneumothorax. If it be a cavity, the bright reflex maybe centrally located and wholly surrounded by a dark or blackshadow, or it may be peripherally… … Liqht ReflexBright Re}Ux Fig. 166. be a pneumothorax, the bright reflex is peripherally located, andusually larger than in the case of cavity. If it exist without thepresence of pulmonary shadows, the diagnosis is clear, becausecavities are always associated with some consolidation. If,…
X-rays · Radiography
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