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Table 2 Surgical and pathologic characteristics

From: Metastasis to lateral lymph nodes with no mesenteric lymph node involvement in low rectal cancer: a retrospective case series

  Entire sample (n = 42) meso+, lat+ (n = 26) meso+, lat− (n = 4) meso−, lat+ (n = 5) meso−, lat− (n = 7)
Surgical approach, n (%)
 Abdominoperineal resection 18 10 (38.5) 2 (50.0) 2 (40) 4 (57.1)
 Anterior resection 19 12 (46.2) 1 (25.0) 3 (60) 3 (42.9)
 Hartmann’s procedure 5 4 (15.4) 1 (25.0)   
LLND dissection, n (%)
 Unilateral 28 13 (50.0) 3 (75.0) 5 (100) 7 (100)
 Bilateral 14 13 (50.0) 1 (25.0)   
TNM stage, n (%)
 0 1 (2.4)     1 (14.3)
 I 1 (2.4)     1 (14.3)
 II 4 (9.5)     4 (57.1)
 III 35 (83.3) 25 (96.2) 4 (100) 5 (100) 1 (14.3)
 IV 1 (2.4) 1 (3.8)    
Mesenteric lymph nodes, M (range)
 No. of dissection per patient 3 (0–23) 17 (10–29) 17.5 (12–20) 16 (12–21) 15 (11–25)
 No. of metastasis per patient 16.5 (10–29) 4.5 (1–23) 5 (2–10) 0 0
Lateral lymph nodes, M (range)
 No. of dissection per each side 7.5 (1–41) 6 (1–41) 15 (7–24) 8 (3–13) 8 (4–19)
 No. of metastasis per each side 1 (0–10) 1 (0–10) 0 1 (1–2) 0
Metastatic lymph node location, n (%)
 Iliac artery region     3 (60)  
 Obturator region     2 (40)  
  1. lat lateral lymph nodes, meso mesenteric lymph nodes, (−) negative, (+) positive