| pyloric lymph nodes | Group of nodes surrounding the pylorus, draining lymph into the right gastric or the right gastro-omental lymph nodes; it is divided into three smaller groups: suprapyloric lymph nodes, above the pylorus; subpyloric lymph nodes, below the pylorus; and retropyloric lymph nodes, behind the pylorus. Synonym: nodi lymphatici pylorici, gastroduodenal lymph nodes. (05 Mar 2000) |
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| sigmoid lymph nodes | Nodes of the inferior mesenteric group, located along the sigmoid arteries. Synonym: nodi lymphatici sigmoidei. (05 Mar 2000) |
| singer's nodes | Small, circumscribed, bilateral, beadlike enlargements on the vocal cords caused by overuse or abuse of the voice; often reversible by voice therapy. Synonym: singer's nodes, singer's nodules, teachers' nodes. (05 Mar 2000) |
| splenic lymph nodes | Nodes near the hilum of the spleen; they receive afferents from the spleen and stomach, and send efferents to the pancreatic-postsplenic and coeliac nodes. Synonym: nodi lymphatici splenici, nodi lymphatici lienales. (05 Mar 2000) |
| subaortic lymph nodes | Nodes of the common iliac group located at the bifurcation of the aorta. Synonym: nodi lymphatici subaortici. (05 Mar 2000) |
| submandibular lymph nodes | Four or five nodes that lie between the mandible and the submandibular gland; they receive vessels from the face below the eye and from the tongue and drain into the superior deep cervical nodes, particularly the jugulodigastric node. Synonym: nodi lymphatici submandibulares. (05 Mar 2000) |
| submental lymph nodes | Small nodes that lie superficial to the mylohyoid muscle; they receive afferents from the lower lip, chin, and the tip of the tongue, and send efferents to the superior deep cervical nodes. Synonym: nodi lymphatici submentales. (05 Mar 2000) |
| subpyloric lymph nodes | A group of lymph nodes located below the pylorus. Synonym: nodi subpylorici, subpyloric node. (05 Mar 2000) |
| subscapular group of axillary lymph nodes | Node's of the axillary region located along the subscapular vein and its tributaries; they receive afferent vessels from the dorsal surface of the thorax and scapular region, and send efferent vessels to the central group of lymph nodes. Synonym: nodi lymphatici axillares subscapulares, posterior group of axillary lymph nodes. (05 Mar 2000) |
| superficial inguinal lymph nodes | A group of 12 to 20 nodes that lie in the subcutaneous tissue below the inguinal ligament and along the terminal part of the great saphenous vein; they drain the skin and subcutaneous tissue of the lower abdominal wall, perineum, buttock, external genitalia, and lower limb; they are subdivided into three groups: inferior (vertical) group of superficial inguinal lymph nodes, located inferior to the saphenous opening receiving drainage of the lower limb; superolateral (lateral horizontal) superfical inguinal lymph nodes located lateral to the saphenous opening receiving drainage of lateral buttock and lower anterior abdominal wall; and superomedial (medial horizontal) superficial inguinal lymph nodes, located medial to the saphenous opening, receiving drainage of the perineum and external genitalia. Synonym: nodi lymphatici inguinales superficiales. (05 Mar 2000) |
| superficial parotid lymph nodes | Several small lymph nodes located in the subcutaneous tissue in the parotid region. Synonym: nodi lymphatici parotidei superficiales. (05 Mar 2000) |
| superior gastric lymph nodes | Nodes located along the left gastric artery and its branches; they are divided into paracardial, upper and lower groups. Synonym: nodi lymphatici gastrici sinistri, superior gastric lymph nodes. (05 Mar 2000) |
| superior mesenteric lymph nodes | The numerous nodes located in the mesentery along the superior mesenteric artery; they receive lymph from the central mesenteric lymph nodes and drain into the intestinal lymph trunk. Synonym: nodi lymphatici mesenterici superiores, nodi lymphatici centrales. (05 Mar 2000) |
| superior phrenic lymph nodes | Three groups of small nodes, anterior, middle, and posterior, on the upper surface of the diaphragm; they receive afferents from the liver, diaphragm, and intercostal spaces and send efferents to parasternal and posterior mediastinal nodes. Synonym: nodi lymphatici phrenici superiores, diaphragmatic nodes. (05 Mar 2000) |
| superior rectal lymph nodes | Nodes of the inferior mesenteric group, located along the superior rectal artery. Synonym: nodi lymphatici rectales superiores. (05 Mar 2000) |