| Hoover's s. |
1. in the normal state or in genuine paralysis, if the patient, lying on a flat surface, is directed to press the whole lower limb against the surface, there will be a lifting movement in the opposite limb; this phenomenon is absent in hysteria and malingering. 2. movement of the costal margins toward the midline during inhalation, occurring bilaterally in pulmonary emphysema and unilaterally in conditions causing flattening of the diaphragm, such as pleural effusion and pneumothorax.
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