2022年11月2日 · In some cases the hyperexpanded superior segment of the left lower lobe insinuates itself between the left upper lobe and the superior mediastinum, sharply silhouetting …

This characteristic finding on CXR is known as the Luftsichel Sign and may represent collapse due to obstruction from a bronchogenic carcinoma. The lucency between the mediastinum and …

2024年8月16日 · Direct signs include: displacement of the interlobar fissures and crowding of vascular markings and bronchi. Indirect signs include local increase in opacity (greater …

2 天之前 · A portion of the left lower lobe expands superior and medial to the collapsed lower lobe (red arrow) ("Luftsichel sign"). On the lateral view, the major fissure (black arrows) is displaced …

2024年8月17日 · The luftsichel sign is seen in some cases of left upper lobe collapse and refers to the frontal chest radiographic appearance due to hyperinflation of the superior segment of …

2022年10月14日 · The left upper lobe (LUL) is one of two lobes in the left lung. It is separated from the left lower lobe by the left oblique fissure and subdivided into four bronchopulmonary …

Radiological criteria: Lobar density and signs of loss of lung volume. When there is endobronchial obstruction, there is no more ventilation and air gets absorbed from alveoli. Alveoli collapse …

Chronic non obstructive collapse of right middle lung lobe and usually associated with bronchiectasis. Most common in children with a history of asthma or atopy. RML syndrome in …

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2024年2月10日 · On CT scans, the atelectatic left upper lobe (LUL) forms a homogeneous opacity based on the anterior chest wall and the mediastinum (Figs. 8.3 and 8.4). Typically, the …