Table 2.
Simplified rules delineate the lymph node areas before conformal radiotherapy treatment
| Supra clavicular region: contouring of the supraclavicular region is guided by the origin of the internal mammary artery |
| Cranial: Thyroid cartilage |
| Caudal: Clavicular head |
| Medial (med): Trachea |
| Posterior (post)-lateral (lat): Anterior scalene muscle |
| Post-med: Carotid artery |
| Infra clavicular region: The infraclavicular region corresponds to lymphatic drainage between axillary vertex and the superior limit of the axillary LN dissection (LND) |
| Cranial: Pectoralis minor |
| Caudal: Sternoclavicular joint |
| Lat: Pectoralis minor (medial side) |
| Med: Clavicle |
| Ant: Pectoralis major |
| Post: Axillary artery |
| Internal mammary chain: The lymph nodes of the IMC are located within the anterior interspaces; they are located either medially or laterally to the vessels and are concentrated in the upper three interspaces |
| Ant: Ant. part of the vascular area |
| Post: The pleura |
| Med: Medial limit of the vascular area |
| Lat: Lateral limit of the vascular area |
| Caudal: Superior side of the 4th rib |
| Cranial: Inferior limit of supra clavicular area |
| Rotter LN or intra pectoral node: situated between: pectoralis major and pectoralis minor at the 2nd intercostal space |
| Axilla |
| Ant: Pectoralis major & pectoralis minor |
| Post: Subscapularis, teres major and latissimus dorsi |
| Med: Seratus anterior |
| Lat: 5 mm backward the skin |
| Caudal: 4th and 5th ribs |
| Cranial: Inferior limit of infraclavicular volume or “first clip” after |
| sentinel lymph node procedure |