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Adverse Effects of Being Underweight on Young Female Breast Cancer Patients with Lymph Node Metastases

Overview
Journal J Cancer
Specialty Oncology
Date 2020 Mar 21
PMID 32194809
Citations 7
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Abstract

: This study aimed to examine the effect of underweight in breast cancer. : We performed a retrospective analysis of 3891 female patients diagnosed with primary breast cancer (I-IV stages). Body mass index (BMI) defined by World Health Organization criteria as follow: Underweight (UW; BMI<18.5 kg/m), normal weight (NW; BMI =18.5-24.9 kg/m) and overweight or obese (OW; BMI≥25 kg/m). We performed to evaluate the association between low BMI and clinical outcome in different age (18-40 years and over 40 years) breast cancer. : In our study, about 7% patients suffer from being underweight and 25% patients suffer from being overweight. Underweight is more prominent in young age group. Although no relationship was found between the recurrence rate and being underweight (HR 1.467(95 % CI 0.940-2.291), P=0.092 for disease-free survival), multivariate regression analysis confirmed that low BMI was an independent overall survival (OS) prognostic factor in young patients (HR 1.610(95 % CI 1.028-2.523), P=0.037 for OS). Further analysis showed the prognostic significance of underweight only seen in young patients with axillary lymph node metastasis or III-IV stage patients. : Our results demonstrate the prognostic importance of low BMI in young breast cancer patients (under 40 years old) with lymph node metastases. The role of low BMI in breast cancer might depend on patients' age and clinical stage.

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