Abstract

PurposeRecently, several investigators have focused on the clinical significance of osteosarcopenia in malignancies; however, its prognostic impact on patients with gastric cancer after conversion surgery (CS) remains unclear. Therefore, we aimed to investigate sarcopenia, osteopenia, and osteosarcopenia in this patient population.MethodsWe retrospectively analyzed 24 patients with gastric cancer who underwent CS. Before CS, the skeletal muscle index at the L3 vertebra and bone mineral density at the Th11 vertebra were measured to investigate sarcopenia and osteopenia, respectively. Osteosarcopenia was defined as the coexistence of sarcopenia and osteopenia. The relationship between perioperative osteosarcopenia and patient prognosis, including clinicopathological factors, was assessed.ResultsAmong the 24 patients, 10 (42%) had osteosarcopenia. Osteosarcopenia was significantly correlated with body mass index, depth of tumor invasion, and tumor stage (all p < 0.05). The median overall survival and disease-free survival after CS in patients with osteosarcopenia were significantly shorter than those in patients without osteosarcopenia (all p < 0.05). In the multivariate analysis, osteosarcopenia was identified as an independent factor related to overall survival alone (p = 0.04).ConclusionAssessment of osteosarcopenia has clinical utility in predicting the prognosis after CS in patients with stage IV gastric cancer after chemotherapy.

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