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Published on: March 20, 2017
Pylorus-preserving gastrectomy enhances long-term bone health in older adults after gastrectomy
Atsushi Morito1, Tomoyuki Irino2, Masayoshi Terayama1
1Department of Gastroenterological Surgery, Gastroenterological Center, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-Ku, Tokyo, 135-8550, Japan.
Purpose:
Gastrectomy for gastric cancer (GC) can impair gastrointestinal function, leading to malabsorption, bone loss, and vertebral fractures (VFs), especially in older adults. Pylorus-preserving gastrectomy (PPG) may attenuate these metabolic complications. This study compared long-term bone outcomes after laparoscopic distal gastrectomy with Billroth-I reconstruction (LDGBI) versus laparoscopic PPG (LPPG).
Methods:
We retrospectively analyzed 75 patients aged ≥75 years with clinical T1N0M0 GC who underwent LDGBI (n = 50) or LPPG (n = 25) between 2005 and 2019. Bone mineral density (BMD) was measured using CT-based Hounsfield units at L1, and VFs were evaluated 1, 3, and 5 years postoperatively. Analysis of covariance and logistic regression were performed.
Results:
BMD loss was significantly greater after LDGBI at 3 years (10 vs. 5 HU, P = 0.038) and 5 years (16 vs. 6 HU, P = 0.036). VF incidence was higher in the LDGBI group at 3 years (14.0% vs. 0%, P = 0.014) and 5 years (28.0% vs. 8.0%, P = 0.034). LDGBI was independently associated with greater 5-year BMD reduction (coefficient 7.83, 95% CI 0.22-15.44, P = 0.044). Logistic regression showed no significant association with VFs (OR 3.57, 95% CI 0.71-17.88, P = 0.12).
Conclusion:
LPPG was associated with reduced long-term BMD loss in older GC patients and may better preserve postoperative bone health.
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