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Topic: Posterior mediastinum

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The Mediastinum As the esophagus enters the posterior mediastinum it is crossed by the arch of the aorta on its left side. The posterior mediastinum is continuous with the superior mediastinum and contains the esophagus, primary bronchi and the thoracic aorta. It passes into the superior mediastinum through the thoracic inlet lying anterior to the vertebral bodies and posterior to the trachea. www.med.mun.ca /anatomyts/thorax/media.htm   (349 words)

CHEST: Tumors of the anterior mediastinum - Primary Mediastinal Tumors, part 1 - review article The anterior mediastinum is defined as the region posterior to the sternum and anterior to the heart and brachiocephalic vessels. The mediastinum is located in the central portion of the thorax, between the two pleural cavities, the diaphragm and the thoracic inlet.[1] It is usually divided into anterior, middle, and posterior "compartments" to help categorize tumors and diseases according to their site of origin and location. It divides the mediastinum into anterior, middle, and posterior compartments based on the lateral chest radiograph (Fig 1). www.findarticles.com /p/articles/mi_m0984/is_n2_v112/ai_19731473   (996 words)

Pulmnary: Mediastinal Masses The middle and posterior mediastinum are divided by a line 1 cm posterior to the anterior border of the vertebral bodies. The mediastinum is divided anatomically into the following compartments (according to Felson): superior, anterior, middle, and posterior. The anterior mediastinum is bounded anteriorly by the sternum. www.indyrad.iupui.edu /rtf/teaching/medstudents/stf/pul1/pul3.htm   (555 words)

Article : Pancreatic Pseudocyst of the Mediastinum ; Author : M Mathew ; Co-Author(s) : M K Narula, R Anand ; Vol / Issue : 12 No.03 August 2002 In the present case, the extension was seen into the posterior mediastinum, extending from the posterior and superior aspect of the pancreas and reaching upto the root of the neck. Extension of the pancreatic pseudocyst into the posterior mediastinum is uncommon and is fraught with serious complications. Owing to the difficulty of scanning beneath the sternum, ultrasound may not be able to demonstrate the superior extent of the mediastinal extension (5). ijri.org /articles/archives/2002-12-3/abdominal_353.htm   (817 words)

Pleura the posterior mediastinum includes the bodies of the vertebrae which includes the paravertebral space and thus includes the sympathetic chains on each side. the middle mediastinum includes the posterior mediastinum and the part of the superior mediastinum posterior to a plane anterior to the trachea the anterior mediastinum by the clinician is the anterior and middle mediastina combined and it extends into the superior mediastinum anterior to the plane of the anterior surface of the trachea. mywebpages.comcast.net /wnor/thoraxlesson3.htm   (225 words)

Chest X-ray Detailed Review: Mediastinum General and Superior Basically, the heart and pericardium form the middle section, everything anterior to the heart is the anterior region, and everything posterior to the heart back to the spine is the posterior mediastinum. The superior mediastinum begins at the root of the neck and ends caudally at a line drawn between T-4 vertebrae and the sternomanubrial junction. Understand on plain films the mediastinum projects as a water density surrounded by the two air filled lungs and intersected by the air filled trachea and major bronchi. rad.usuhs.mil /rad/chest_review/mediasti/mediasti.html   (656 words)

Baylor Health Care System: Acute mediastinitis The abscess in the upper posterior mediastinum was partially resected, and its purulent contents and necrotic tissues were removed. Through a left anterior second space incision, the large air pocket in the upper posterior mediastinum was drained extrapleurally using a chest tube with underwater seal. Infections in the previsceral space may reach the mediastinum by spreading through the neck or breaking through the alar fascia to reach the danger space (the retrovisceral space). www.baylorhealth.edu /proceedings/13_1/13_1_razzuk.html   (1656 words)

Search Results for "Mediastinum" ...1032– The position and relation of the esophagus in the cervical region and in the posterior mediastinum. ...of the left common carotid artery ascends from the arch of the aorta through the superior mediastinum to the level of the left sternoclavicular joint, where it is... ...a hollow muscular organ of a somewhat conical form; it lies between the lungs in the middle mediastinum and is enclosed in the pericardium (Fig. www.bartleby.com /cgi-bin/texis/webinator/sitesearch?FILTER=col107%amp;query=Mediastinum   (276 words)

Anatomy - Upper Extremity The thoracic duct usually ascends in the posterior mediastinum on the right side of the aorta, between it and the azygos vein if it is present. The superior mediastinum is the space between the superior thoracic aperture (first rib) and an imaginary line drawn between the sternal angle and the disc between T4 and T5 vertebrae. The arch of the aorta is in the superior mediastinum and gives rise to the brachiocephalic, left common carotid and left subclavian arteries. cats.med.uvm.edu /cats_teachingmod/gross_anatomy/thorax/pages/mediastinum.html   (572 words)

The Mediastinum - Wikimd This lower portion is again subdivided into three parts, viz., that in front of the pericardium, the anterior mediastinum that containing the pericardium and its contents, the middle mediastinum and that behind the pericardium, the posterior mediastinum The Superior Mediastinum (Fig. The mediastinum lies between the right and left pleuræ in and near the median sagittal plane of the chest. It may be divided for purposes of description into two parts: an upper portion, above the upper level of the pericardium, which is named the superior mediastinum and a lower portion, below the upper level of the pericardium. www.wikimd.org /index.php?title=The_Mediastinum   (418 words)

Superior and inferior mediastinum the posterior mediastinum is the area behind the heart. the superior mediastinum is bounded superiorly by the thoracic inlet and inferiorly by a horizontal line through the sternal angle. The mediastinum is the area between the right and left pleural cavities. www.meddean.luc.edu /lumen/MedEd/GrossAnatomy/thorax0/thor_lec/thor5.html   (41 words)

Posterior Mediastinum In the dissection of cadavers, the posterior mediastinum is exposed by removing the pericardial sac and the heart. The anterior boundary of the posterior mediastinum is the posterior pericardial wall. The most posterior item in the posterior mediastinum is the anterior longitudinal ligament which completely covers the anterior surfaces of the bodies of the vertebrae. mywebpages.comcast.net /wnor/thoraxlesson5.htm   (1160 words)

Posterior Mediastinum The anterior boundary of the posterior mediastinum is the posterior pericardial wall. In the dissection of cadavers, the posterior mediastinum is exposed by removing the pericardial sac and the heart. The most posterior item in the posterior mediastinum is the anterior longitudinal ligament which completely covers the anterior surfaces of the bodies of the vertebrae. mywebpages.comcast.net /wnor/thoraxlesson5.htm   (1160 words)

tk04.wbc The Superior, Anterior, and Middle Mediastinum, Pleura and Thymus The thorax is arbitrarily divided into a superior anterior middle and posterior mediastinum. The superior mediastinum is bounded superiorly by the oblique plane of the first rib, laterally by parietal pleura, and inferiorly by a horizontal plane passing through the sternal angle and the vertebral column at the disk between the 4th and 5th thoracic vertebrae. The pericardium, heart and great vessels, bronchi and roots of lungs and arch of azygos vein are also found in the middle mediastinum. www.kumc.edu /research/medicine/pharmacology/CAI/webCAI/anatomy/tk04.wbc   (625 words)

Mediastinum-Printer Friendly version Cystic lesions occur in infants or children in posterior mediastinum Mediastinum is thoracic cavity between pleural cavities, from sternum to spine, thoracic inlet to diaphragm Anterior mediastinum: ventral to anterior cardiac border and aortic root - thymic epithelial tumors and cysts, germ cell neoplasms, lymphoproliferative lesions, retrosternal thyroid glandular proliferations, parathyroid lesions, aorticopulmonary-type paragangliomas, lymphangioma, hemangioma, lipoma www.pathologyoutlines.com /mediastinumpf.html   (5205 words)

Imaging of Cystic Masses of the Mediastinum -- Jeung et al. 22 (Supplement 1): 79 -- RadioGraphics in the middle or posterior mediastinum (Fig 3). Clinical spectrum of bronchogenic cysts of the mediastinum and lung in adults. CT evaluation of the anterior mediastinum: spectrum of disease. radiographics.rsnajnls.org /cgi/content/full/22/suppl_1/S79   (5499 words)

CHEST: Staging of the mediastinum: role of mediastinoscopy and computed tomography - Multimodality Therapy of Chest Malignancies - Proceedings of a Harvard Medical School Symposium But nodes in the subaortic window and in the left anterior mediastinum (usually along the phrenic nerve) cannot be reached by conventional mediastinoscopy, nor can the inferior or posterior subcarinal lymph nodes. More accurate staging, particularly of lymphadenopathy in the mediastinum, however, has significantly reduced the incidence of fruitless exploratory thoracotomy during these years. CHEST: Staging of the mediastinum: role of mediastinoscopy and computed tomography - Multimodality Therapy of Chest Malignancies - Proceedings of a Harvard Medical School Symposium www.findarticles.com /p/articles/mi_m0984/is_n4_v103/ai_13722782   (1182 words)

Clinical Case - Posterior Mediastinum What lymph nodes can be found in the posterior mediastinum? The posterior mediastinal lymph nodes lie posterior to the pericardium. www.med.umich.edu /lrc/coursepages/M1/anatomy/html/thorax/post_med_case.html   (905 words)

XI. Splanchnology. 2d. The Esophagus. Gray, Henry. 1918. Anatomy of the Human Body. The position and relation of the esophagus in the cervical region and in the posterior mediastinum. The abdominal portion of the esophagus lies in the esophageal groove on the posterior surface of the left lobe of the liver. The thoracic portion of the esophagus is at first situated in the superior mediastinum between the trachea and the vertebral column, a little to the left of the median line. www.bartleby.com /107/245.html   (958 words)

Baylor Health Care System: Acute mediastinitis Through a left anterior second space incision, the large air pocket in the upper posterior mediastinum was drained extrapleurally using a chest tube with underwater seal. A CT scan of the neck and chest obtained on hospital day 12 showed fluid in the right side of the neck, upper anterior mediastinum, upper posterior mediastinum, empyema thoracis, and left hydrothorax. The pleural space was drained with 3 chest tubes connected to underwater seal, and the left hydrothorax was drained with 2 chest tubes connected to underwater seal. www.baylorhealth.edu /proceedings/13_1/13_1_razzuk.html   (958 words)

The Esophagus - Wikimd In the lower part of the posterior mediastinum the thoracic duct lies to the right side of the esophagus; higher up, it is placed behind it, and, crossing about the level of the fourth thoracic vertebra, is continued upward on its left side. The thoracic portion of the esophagus is at first situated in the superior mediastinum between the trachea and the vertebral column, a little to the left of the median line. On its left side, in the superior mediastinum, are the terminal part of the aortic arch, the left subclavian artery, the thoracic duct, and left pleura, while running upward in the angle between it and the trachea is the left recurrent nerve; below, it is in relation with the descending thoracic aorta. www.wikimd.org /index.php?title=The_Esophagus   (948 words)

V. Angiology. 4b. The Heart. Gray, Henry. 1918. Anatomy of the Human Body. The heart is a hollow muscular organ of a somewhat conical form; it lies between the lungs in the middle mediastinum and is enclosed in the pericardium (Fig. There are two papillary muscles, anterior and posterior: of these, the anterior is the larger, and its chordæ tendineæ are connected with the anterior and posterior cusps of the valve: the posterior papillary muscle sometimes consists of two or three parts; its chordæ tendineæ are connected with the posterior and medial cusps. The atrioventricular rings serve for the attachment of the muscular fibers of the atria and ventricles, and for the attachment of the bicuspid and tricuspid valves. www.bartleby.com /107/138.html   (948 words)

Virtual Children's Hospital: Paediapaedia: Galenic Arteriovenous Malformation (Vein of Galen Aneurysm) The superior mediastinum is widened due to dilation of the brachiocephalic arteries and veins. The major feeding vessels are the posterior cerebral artery and its branches the posterior choroidal and posterior perforating artery. Is a congenital arteriovenous malformation with blood shunting from cerebral arteries into an aneurysmally dilated great vein of Galen and the straight sinus. www.vh.org /pediatric/provider/radiology/PAP/NeuroDiseases/GalenicAVM.html   (150 words)

Thoracic Outlet: Anatomic Correlation with MR Imaging -- Demondion et al. 175 (2): 417 -- American Journal of Roentgenology Note retropectoralis minor space defined anteriorly by posterior border of pectoralis minor muscle and posteriorly by subscapularis muscle. Note also contact between neurovascular structures and posterior side of pectoralis minor muscle and anteroposterior compression of axillary vein. minor muscle and posteriorly by the subscapularis muscle. www.ajronline.org /cgi/content/full/175/2/417   (2112 words)

Heart, Superior Mediastinum semilunar valve has a thin endothelial free margin on each cusp called a lunula; a dense nodule is located at the midpoint of the free margin of each valve cusp; the pulmonary semilunar valve has anterior, left and right cusps; the aortic semilunar valve has right, left and posterior cusps papillary muscles attach to the cusps of the atrioventricular valves via chordae tendineae and act to keep the valve cusps from prolapsing under systolic blood pressure; there are three in the right ventricle: anterior, posterior, septal; there are two in the left ventricle: anterior, posterior arises superior to the left cusp of the aortic semilunar valve; during its short course, it is located in the coronary sulcus; the anterior interventricular a. anatomy.uams.edu /AnatomyHTML/heart2.html   (2112 words)

lab21_13.html The thoracic duct lies posterior to the esophagus as it passes through the posterior mediastinum. Identify the thin-walled lymphatic vessels, the thoracic duct [probe] [cross-section], which lies posterior to the esophagus and between the azygous vein [ probe] [cross-section ] and the descending aorta. The thoracic duct then passes through the superior thoracic aperture and joins the venous circulation near the junction of the left subclavian and left internal jugular veins (Figure 21.5). www.med.uc.edu /haonline/thorax/labs/lab21/lab21_13.html   (128 words)

Instant Anatomy - Site Map Instant Anatomy - Thorax - Areas/Organs - Mediastinum - Posterior Instant Anatomy - Thorax - Areas/Organs - Mediastinum - Anterior Instant Anatomy - Abdomen - Areas/Organs - Bowel - Duodenum Histology www.instantanatomy.net /sitemap.html   (128 words)

Susceptible Periods during Embryogenesis of the Heart and Endocrine Glands While the parathyroids assume a final position posterior to the lobes of the thyroid, the thymic anlagen migrate to the anterior mediastinum where they fuse in the midline (Figure 11). The pituitary gland is derived from two sources: the posterior lobe arises from neuroepithelium of the diencephalon, the infundibulum; the anterior and intermediate lobes from an outpocketing of epithelium in the oral cavity (itself a derivative of neural ectoderm from the anterior neural ridge), called Rathke's pouch (43) (Figure 12). The thyroid gland originates from endoderm in the floor of the pharynx and migrates in the midline to the larynx. ehp.niehs.nih.gov /members/2000/suppl-3/555-561sadler/sadler-full.html   (5504 words)

Anatomy: Thorax and Mediastinum Serratus Posterior (Outer Muscles): Originate from the vertebrata and insert on the ribs on the posterior. Inserts on the anterior surface (body) of the vertebrata and the anterior surface of the ribs. COSTOVERTEBRAL JOINTS: Joint between each rib and vertebrata, joined at the transverse process of the vertebrata and the articular facet of the rib (at the tubercle). www.themedicaldirectory.org /sciences/anatomy/thorax.shtml   (5504 words)

eMedicine - Thalassemia : Article by Jack P Lawson, MD In the most severely affected patients, and in particular, in patients with thalassemia intermedia, prominent lobulated soft tissue densities may be noted in the posterior mediastinum and, to a lesser degree, in the anterior mediastinum or pelvis. With the exception of sickle cell thalassemia, in which radiographic changes may reflect vaso-occlusive phenomena, as well as the changes of marrow hypertrophy, the radiographic appearances of these variants are solely the result of marrow proliferation and, consequently, are dependent on the degree and duration of any anemia and the type of transfusion therapy. Hematopoietic marrow is vascular and in thalassemia, a 5- to 30-fold increase in activity may occur as a result of marrow hyperplasia and hypertrophy. www.emedicine.com /radio/topic686.htm   (3902 words)

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