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Supportive Care in Cancer

, Volume 24, Issue 11, pp 4721–4726 | Cite as

Evaluation of sarcopenia in small-cell lung cancer patients by routine chest CT

  • Eun Young Kim
  • Young Saing KimEmail author
  • Inkeun Park
  • Hee Kyung Ahn
  • Eun Kyung Cho
  • Yu Mi Jeong
  • Jeong Ho Kim
Original Article

Abstract

Background

Single cross-sectional area of muscle at the third lumbar vertebra (L3MA) is gold standard to estimate skeletal muscle mass (SMM), and L3 muscle index (L3MI, L3MA/height2) is used to determine sarcopenia. The purposes of this study were to evaluate the relationship between SMM indices determined by routine chest CT and L3MI in patients with small-cell lung cancer (SCLC) and to suggest chest CT-derived diagnostic criteria for sarcopenia.

Methods

Area of pectoralis muscles at the aortic arch (PMA) and at L1 (L1MA) was retrospectively measured on chest CT images of 90 consecutive SCLC patients. Pearson’s correlation and multiple linear regression analysis were used to assess relationships between L3MI determined by PET/CT and pectoralis muscle index (PMI) and L1 muscle index (L1MI) determined by chest CT.

Results

The correlation between L1MI and L3MI was stronger than that between PMI and L3MI (r = 0.851 vs. r = 0.447, p < 0.001). Multivariable regression analysis showed that L1MI was the only significant predictor of L3MI; L3MI = 0.963 × L1MI + 10.336 (R 2  = 0.689, p < 0.001) for male and L3MI = 0.772 × L1MI + 16.518 (R 2  = 0.777, p < 0.001) for female. Using this relationship, estimated cutoffs of L1MI for sarcopenia were 46 cm2/m2 for male and 29 cm2/m2 for female (L3MI cutoffs for sarcopenia are 55 cm2/m2 for male and 39 cm2/m2 for female). The sensitivity and specificity of L1MI cutoffs to determine sarcopenia were 98.2 and 100 %, respectively.

Conclusions

Chest CT-determined L1MI is highly correlated with L3MI in SCLC patients. L1MI, as determined by chest CT, could be used to determine the presence of sarcopenia with suggested cutoffs of 46 cm2/m2 for men and 29 cm2/m2 for women.

Keywords

Skeletal muscle mass Small-cell lung cancer Sarcopenia Cancer cachexia Tomography X-ray computed 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no proprietary, commercial, or financial interests that could be construed to have inappropriately influenced this study.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Eun Young Kim
    • 1
  • Young Saing Kim
    • 2
    Email author
  • Inkeun Park
    • 2
  • Hee Kyung Ahn
    • 2
  • Eun Kyung Cho
    • 2
  • Yu Mi Jeong
    • 1
  • Jeong Ho Kim
    • 1
  1. 1.Department of RadiologyGachon University Gil Medical CenterIncheonRepublic of Korea
  2. 2.Division of Hematology and Oncology, Department of Internal MedicineGachon University Gil Medical CenterIncheonRepublic of Korea

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