Fig. 1. Body composition measurements from baseline and follow-up abdominal CT images of a 31-year-old female with breast cancer using in-house software.

A. At the level endplate of the third lumbar vertebra, which best showed both transverse processes, the transverse section of the CT image is segmented into the SMA (green), VAT (blue), and SAT (red). The SMI and VAT measured at the baseline abdominal CT were 39.1 cm²/m² and 78.3 cm², respectively. B. Follow-up CT assessed the SMA, VAT, and SAT at the same level as that of the baseline CT scan. At the follow-up abdominal CT (48 months after surgery), the SMI and VAT were 37.88 cm²/m² and 82.12 cm², respectively. There was no recurrence until the last follow-up. SAT = subcutaneous adipose tissue area, SMA = skeletal muscle area, SMI = skeletal muscle index, VAT = visceral adipose tissue area