13 Tracheobronchial lymph nodes. Nodi lym-phatici tracheobronchiales. Group located along the bronchi at the site where they enter into the lungs. C

14 Superior tracheobronchial lymph nodes. Nodi lymphatici tracheobronchiales superiores. Group situated cranially on the stem bronchi and the trachea. C

15 Inferior tracheobronchial lymph nodes. Nodi lym-phatici tracheobronchiales inferiores. Group located caudal to the tracheal bifurcation. C

16 Paratracheal lymph nodes. Nodi lymphatici paratracheales. Group situated along the trachea. C

17 Node of arch of azygos vein. [Nodus arcus venae azygos]. Lymph node occasionally present at the arch which the azygos vein forms around the hilum of the right lung before joining the superior vena cava. B

1 Thorax.

2 PARAMAMMARY LYMPH NODES. Nodi lym-phatici paramammarii. Lymph nodes on the lateral margin of the mammary gland. A

3 Parasternal lymph nodes. Nodi lymphatici parasternales. Nodes located along the course of the internal thoracic vessels. Afferent regions: mammary gland, intercostal spaces, part of the liver and diaphragm. Efferents: either directly into the respective subclavian vein or internal jugular vein or into the thoracic duct or subclavian trunk. A

4 Intercostal lymph nodes. Nodi lymphatici intercostales. Nodes located in the paravertebral portion of the intercostal spaces. Afferent area: pleura and intercostal spaces. D

5 Paravertebral lymph nodes. Nodi lymphatici praevertebrales.3 Nodes located between the esophagus and vertebral column. Afferent regions: surroundings, if not drained by other vessels. C D

6 Superior phrenic lymph nodes. Nodi lymphat-ici phrenici superiores. Nodes situated behind the cartilage-bone boundary of the 7th rib at the site where the aorta opens into the diaphragm and along the inferior vena cava. Afferent areas: liver and diaphragm. D

7 Prepericardial lymph nodes. Nodi lymphatici prepericardiales. Nodes located between the sternum and pericardium. Afferent regions: sternum and anterior pericardium. Efferents: parasternal lymph nodes. B

8 Lateral pericardial lymph nodes. Nodi lym-phatici pericardiales laterales. Nodes found between the pericardium and mediastinal pleura. B

9 Anterior mediastinal lymph nodes. Nodi lym-phatici mediastinales anteriores. Nodes along the brachiocephalic veins, in front of the arch of the aorta and its branches. Afferent regions: thymus, pericardium and parasternal lymph nodes. Efferents: bronchomediastinal trunk. B

10 Ligamentum arteriosum node. [Nodus liga-menti arteriosi]. Node occasionally found along the lig. arteriosum. B

11 Posterior mediastinal lymph nodes. Nodi lym-phatici mediastinales posteriores. Nodes situated in the superior and posterior mediastinum. They receive lymph from the following organs: lungs, bronchi, trachea, esophagus, pericardium, diaphragm and diaphragmatic surface of the liver. They pass efferent vessels to the thoracic and bronchomediastinal ducts. The posterior mediastinal lymph nodes are subdivided into the following groups.

12 Pulmonary juxtaesophageal lymph nodes.

Nodi lymphatici juxtaoesophageales pul-monales. Group situated beside the esophagus; they serve the lungs. C

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