Development of skeletal muscle atrophy and intermuscular adipose tissue in patients with early breast cancer treated with chemotherapy.

The cross-sectional area of the vastus lateralis muscle fibers substantially decreased (−21%; P < 0.01), and muscle architecture was altered, as shown by a decrease in fascicle length (−15%; P < 0.05) and a decreasing trend in muscle thickness (−8%; P = 0.08).

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