Light Accessory Intra-abdominal

Mild accessory is a rare pathology. A feature of the disease is that there are two lungs on the patient’s chest. In the first case, an additional lung develops from the upper segment of the bronchial tree. Then its name will be bronchopulmonary gills (brachylobus). In the second case, an additional lung appears due to a bifurcation of the common bronchial trunk in the left or right bronchus. Then it receives the name polysegmental lungs (polysegmentum), “double lungs”. The lung can be unilateral or bilateral.

Brief Definition

Accessory lung **intra-abdominal** (also false lung or pseudo-assimilation lung; sometimes called alveolar lung) is a thin-walled blind protrusion of the peritoneum that develops in humans and dogs and is similar to a normal lung in shape, structure of the bronchial tree and position in the chest cavity. It has the same origin and development with the paired right - the usual pulmonary hemisphere. It is located between the liver and the diaphragm on the border of the right costal and lumbar regions of the chest. They form an allobarchanoid sac, which opens with a slit-like opening on the posterolateral surface below and behind between the two median marginal umbilical folds located on the abdominal wall, 2-4 cm above the right umbilical fossa. The intragastric position of these folds is due to inversion along the right mesentery in embryos. During intrauterine development, both lungs begin to develop on the lateral abdominal wall in the upper part of the sac formed by sections of the ventral mesoderm, but penetrate into the same retroperitoneal space, and therefore converge with each other in the form of a funnel. Later, this air space is filled with a yolk sac, the growth of which transforms these areas of mesoderm into a true allobronchiolar (bronchocholecystic) sac, and the infundibulum is replaced by the mediastinal organ in the upper right corner of the posterior abdominal wall near the portal of the liver and the actual right pneumatization of the internal organs is formed and the right (accessory) is formed. intra-abdomial lung. In the remaining four pairs of lungs, the bronchial trunk has no deviations in these areas towards the mediastinum, and then the right artery bends retrograde along the bend of the intestine and crosses the cholera on the way to the right hypochondrium to form the carotid triangle. Pseudo-assimilation dome (cerebral cortex), constantly pressing on the lung along the midline above the liver's own fascia, including the third lower vascular-fascial layer that forms from it, turns into the small posterior lacrimal ligament, descending into the stomach and