Abeer Fatimaalmost 2 years ago

Holzknecht Sign

One of the common causes of respiratory symptoms in children is foreign body aspiration. Pneumonia recurring at the same location in the lung can indicate chronic aspiration of a foreign body. Radiological studies in such cases are of immense importance. Holzknecht sign is found on radiography in chronic cases of foreign body aspiration. On expiration, the affected lung becomes pneumatic due to occlusion at the level of bronchi. This results in an ipsilateral downward push on the diaphragm by the lung. On inhalation, the midline shifts to the affected side which is referred to as the Holzknecht sign. Reference: http://oftankonyv.reak.bme.hu/tiki-index.php?page=Thorax Image via: https://blog.myesr.org/caceress-corner-case-58/