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. 2023 Jan 10;41(6):617–624. doi: 10.1007/s11604-023-01387-1

Fig. 1.

Fig. 1

Division of axilla level I. Axilla level I was divided into ventral and dorsal parts on the axial plane using a perpendicular line extending from the most anterior margin of the muscle group, including the deltoid, latissimus dorsi, or teres major muscles, relative to a line drawn along the lateral chest wall