The interpectoral (Rotter) nodes are a small group of nodes between pectoralis major and pectoralis minor. They drain part of the breast directly to the apical axillary nodes.
| Location | Between pectoralis major and pectoralis minor, along the pectoral branches of the thoracoacromial artery |
|---|---|
| Receives lymph from |
|
| Lymphatic drainage |
Provide an alternative pathway for breast lymph bypassing the lower axilla.
They can harbour breast cancer spread even when lower axillary nodes are clear and may be missed if not specifically assessed. They are sometimes removed in more extensive axillary surgery.
Spread of breast cancer to the nodes between the pectoral muscles.
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