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Venous drainage is usually to the left atrium via pulmonary veins establishing a left to left shunt. Abnormal connections to the vena cava , azygous vein , or right atrium may occur. Two thirds of the time, the sequestration is located in the paravertebral gutter in the posterior segment of the left lower lobe.
A lung nodule or pulmonary nodule is a relatively small focal density in the lung. A solitary pulmonary nodule (SPN) or coin lesion, [1] is a mass in the lung smaller than three centimeters in diameter. A pulmonary micronodule has a diameter of less than three millimetres. [2] There may also be multiple nodules.
Lobar pneumonia is a form of pneumonia characterized by inflammatory exudate within the intra-alveolar space resulting in consolidation that affects a large and continuous area of the lobe of a lung. [1] [2] It is one of three anatomic classifications of pneumonia (the other being bronchopneumonia and atypical pneumonia).
High-resolution CT image showing ground-glass opacities in the periphery of both lungs in a patient with COVID-19 (red arrows). The adjacent normal lung tissue with lower attenuation appears as darker areas. Ground-glass opacity (GGO) is a finding seen on chest x-ray (radiograph) or computed tomography (CT) imaging of the lungs.
Anatomic lung resection, i.e. pulmonary lobectomy or pneumonectomy, in conjunction with removal of the lymph nodes from the mediastinum is the treatment modality that provides the greatest chance of long-term survival in patients with early stage non-small cell lung cancer.
On a chest X-ray, the sail sign is a radiologic sign that suggests left lower lobe collapse. [1] In children, however, a sail sign could be normal, reflecting the shadow of the thymus. [2] The thymic sail sign or spinnaker-sail sign is due to elevation of the thymic lobes in the setting of pneumomediastinum. [3]
superior vena cava obstruction- facial, neck, upper torso swelling. This is caused by compression of vasculature by the lung tumor that restricts blood return from the upper body. [4] dysphagia (trouble swallowing or the sensation that something is caught in the throat) and hoarseness; new onset of wheezing without history of asthma
A pulmonary consolidation is a region of normally compressible lung tissue that has filled with liquid instead of air. [1] The condition is marked by induration [2] (swelling or hardening of normally soft tissue) of a normally aerated lung.