## Clinical Assessment **Key Point:** This patient has T2N1M0 gastric cancer (stage IB–II) localized to the distal antrum with resectable regional lymph node involvement and no distant metastases. ## Surgical Decision-Making ### Extent of Gastrectomy - **Distal (antral) tumors:** Distal gastrectomy is adequate if the proximal margin is ≥5 cm from the tumor. - **Total gastrectomy:** Reserved for proximal/cardia tumors, diffuse tumors (linitis plastica), or when adequate proximal margin cannot be achieved. - In this case, the 4 cm antral lesion allows safe distal resection with adequate margins. ### Lymphadenectomy Standard - **D2 lymphadenectomy** is the standard of care for curative-intent gastric cancer surgery in fit patients [cite:Japanese Gastric Cancer Association Guidelines]. - D2 includes removal of perigastric nodes (D1) plus nodes along the left gastric, celiac, splenic, and hepatic arteries. - Improves long-term survival in T2–T4 tumors with nodal involvement. ### Reconstruction Method - **Billroth II (gastrojejunostomy)** is preferred for distal gastrectomy: - Lower incidence of afferent loop syndrome compared to Billroth I. - Better long-term nutritional outcomes. - Standard reconstruction in Japanese and European guidelines. - Billroth I (gastroduodenostomy) is an alternative if the duodenum is mobile and tension-free. **Clinical Pearl:** Roux-en-Y is reserved for total gastrectomy (to prevent reflux esophagitis) or when Billroth II is not feasible. ## Why Distal Gastrectomy Here 1. **Tumor location:** Antral (distal) → distal gastrectomy sufficient. 2. **Resectability:** No involvement of proximal stomach or cardia. 3. **Lymph node status:** N1 (3 nodes) → D2 lymphadenectomy indicated. 4. **Fitness:** Patient is a surgical candidate without contraindications. **High-Yield:** The combination of distal location + T2N1M0 stage + fit patient = **distal gastrectomy + D2 + Billroth II** is the gold standard.
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