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The right lobe is of a somewhat quadrilateral form. Its under and posterior surfaces being marked by three fossæ: the fossa for the portal vein, the fossa for the gall-bladder and the fossae for the inferior vena cava. These separate the right lobe into two smaller lobes on its left posterior part: the quadrate lobe and the caudate lobe.
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).
A parapneumonic effusion (circled), due to a left lower lobe pneumonia. A parapneumonic effusion is a type of pleural effusion (accumulation of fluid in the pleural cavity ) that arises as a result of a pneumonia , lung abscess , or bronchiectasis . [ 1 ]
A lobar pneumonia is an infection that only involves a single lobe, or section, of a lung. Lobar pneumonia is often due to Streptococcus pneumoniae (though Klebsiella pneumoniae is also possible.) [16] Multilobar pneumonia involves more than one lobe, and it often causes a more severe illness.
The left lung is divided into two lobes, an upper and a lower lobe, by the oblique fissure, which extends from the costal to the mediastinal surface of the lung both above and below the hilum. [1] The left lung, unlike the right, does not have a middle lobe, though it does have a homologous feature, a projection of the upper lobe termed the ...
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.
Lower left abdominal pain can have many causes, ranging from minor to serious, says Andrew Boxer, M.D., gastroenterologist of Gastroenterology Associates of New Jersey. Common causes include:
There are ten bronchopulmonary segments in the right lung: three in the superior lobe, two in the middle lobe, and five in the inferior lobe. Some of the segments may fuse in the left lung to form usually eight to nine segments (four to five in the upper lobe and four to five in the lower lobe.