Topic: Gross anatomy, blood supply and lymphatic drainage of tongue, thyroid, mammary gland, stomach
Question: Describe the lymphatic drainage of stomach and the clinical significance of the same with the hep of a diagram.
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Lymphatic drainage of the stomach:
- The stomach has an extensive submucosal and subserosal lymphatic plexus that drains different regions into specific lymph node groups (see diagram).
- Cardia and fundus: Drain into paracardial nodes near gastro-esophageal junction.
- Lesser curvature: Drains into nodes along the lesser curvature (left gastric nodes).
- Greater curvature: Drains into nodes along the greater curvature (right and left gastroepiploic nodes).
- Pylorus: Drains into nodes around the pylorus (suprapyloric and infrapyloric nodes).
- All gastric lymph vessels ultimately drain into the celiac group of lymph nodes.
Clinical significance:
- Spread of gastric cancer occurs via lymphatics to regional lymph nodes. This aids in tumor staging.
- Lymph node groups at highest risk of metastasis based on tumor location are examined to determine prognosis and guide therapy.
- For example, carcinoma of the cardiac end spreads to paracardial nodes while antral tumors spread to pyloric nodes.
- Gastrectomy with en bloc lymphadenectomy for gastric cancer removes stomach and surrounding nodal basins.
Title: UPSC Medico Test Series: The Ultimate Guide to Cracking the UPSC CSE
Introduction:
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