mediastinal


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mediastinal

 [me″de-as-ti´n´l]
of or pertaining to the mediastinum.
mediastinal flutter movement of the tissues and organs of the mediastinum back and forth with each movement of air into and out of an open sucking wound in the thoracic cavity. The condition can produce serious impairment of cardiopulmonary function and is fatal if not treated promptly. Symptoms are similar to those of mediastinal shift.
mediastinal shift a shifting or moving of the tissues and organs that comprise the mediastinum (heart, great vessels, trachea, and esophagus) to one side of the chest cavity. The condition occurs when a severe injury to the chest causes the entrapment of air in the pleural space (tension pneumothorax). As the volume of air increases on the affected side, the lung collapses and the organs and tissues of the mediastinum are crowded to the opposite side of the chest. This can produce compression of the other lung and kinking or twisting of one or more of the great blood vessels, which in turn seriously impairs blood flow to and from the heart.

Symptoms of mediastinal shift include severe dyspnea, cyanosis, displacement of the trachea to one side, and distended neck veins. The immediate treatment is insertion of a hollow needle or trocar into the pleural space (thoracentesis) to provide an outlet for the escape of air and fluid. After the trapped air is released, closed chest drainage is initiated to allow for reexpansion of the lung.
Mediastinal shift. As air from a pneumothorax is drawn into the chest cavity, it places pressure on the trachea, heart, and great vessels, causing them to shift from their normal anatomic positions. From Polaski and Tatro, 1996.

me·di·as·ti·nal

(mē'dē-as-tī'năl),
Relating to the mediastinum.

mediastinal

/me·di·as·ti·nal/ (-as-ti´n'l) of or pertaining to the mediastinum.

mediastinal

[mē′dē·əstī′nəl]
Etymology: L, mediastinus, midway
pertaining to a median septum or space between two parts of the body, such as the interval between the pleural sacs.

mediastinal

adjective Referring to the mediastinum.

me·di·as·ti·nal

(mē'dē-ă-stī'năl)
Relating to the mediastinum.

mediastinal

of or pertaining to the mediastinum.

mediastinal abscess
an abscess that causes systemic signs of toxemia and fever but also severe pain with each inspiration, causing grunting as in pleurisy but without the auscultatory findings of pleurisy.
mediastinal cyst
remnants of branchial pouches may be found in the anterior mediastinum, particularly in brachycephalic dogs; bronchogenic cysts are found in the posterior mediastinum.
mediastinal emphysema
mediastinal flutter
movement of the tissues and organs of the mediastinum back and forth with each movement of air in and out of an open sucking wound in the thoracic cavity. The condition can produce serious impairment of cardiopulmonary function and is fatal if not treated promptly. Signs are similar to those of mediastinal shift (see below).
mediastinal lymph node enlargement
a condition due to abscess formation or neoplastic growth which may cause obstruction to the esophagus and dysphagia, or to the bronchi, causing inspiratory dyspnea. If it is in the anterior chest and of considerable size, it may mimic congestive heart failure, with jugular vein engorgement and edema of the brisket.
mediastinal neoplasm
characterized by progressive weight loss, reduced exercise tolerance, dyspnea, hydrothorax, areas of dullness on auscultation or percussion over lungs, neoplastic cells in pleural fluid if lesion intrudes into pleural cavity.
mediastinal shift
a shifting or moving of the tissues and organs that comprise the mediastinum (heart, great vessels, trachea and esophagus) to one side of the chest cavity. The condition occurs when a severe injury to the chest causes the entrapment of air in the pleural space (tension pneumothorax). As the volume of air increases on the affected side, the lung collapses and the organs and tissues of the mediastinum are crowded to the opposite side of the chest. This can produce compression of the other lung and kinking or twisting of one or more of the great blood vessels, which in turn seriously impairs blood flow to and from the heart.
mediastinal testis
a partial septum of the testis that contains the rete testis.
References in periodicals archive ?
2] Symptoms of mediastinal abscess were nonspecific including fever, new productive cough, chest pain, hemoptysis, shortness of breath, and arrhythmia.
Surgery for mediastinal goitres should always be thought of as there is high risk of tracheal compression, malignant potential, mass effects and the low morbidity of the surgery.
18]F-FDG uptake thick-walled cavity inside accompanied with enlarged right lung hilus and mediastinal lymph node.
A normal thymus can be misleading in the diagnosis of a mediastinal mass in a child.
The current study indicated that the absence of a stylet does not impair specimen quality or diagnostic efficiency in EBUS-TBNA sampling of mediastinal or hilar lymph nodes, as previously reported for similar endoscopic ultrasound-guided fine-needle aspiration procedures (14-16).
However, mediastinal bronchogenic cysts are located near the carina between the trachea and the esophagus and, therefore, obstruction of the main bronchi resulting in respiratory distress is a well-established complication.
In 2005, his pathology files from 1996-2004 were examined, and of 19 mediastinal cysts, three (16%) of the cysts demonstrated Mullerian degeneration.
The BF, BV, and PS values for all anterior mediastinal lesions are given in the Table.
1) There was mediastinal lymph node enlargement in 55% of these patients.
GN Hounsfield in 1972, it immerged as the choice for assessing the mediastinal masses.
Best approach for posterior mediastinal goiter removal: transcervical incision and lateral thoracotomy.