Table 3.
Size, location and laterality distribution of identifiable internal mammary nodes (total nodes identified in 77 patients were 115)
| Number of Nodes |
Percentage (%) |
|
|---|---|---|
| Size (measured in short axis) distribution of identifiable internal mammary nodes (IMN) | ||
| <4 mm | 23 | 20.0 |
| 4–6 mm | 28 | 24.4 |
| 6–8 mm | 29 | 25.2 |
| 8–10 mm | 16 | 13.9 |
| >10 mm | 19 | 16.5 |
| Distribution of identifiable IMN with respect to intercostal space | ||
| first Intercostal space | 40 | 34.8 |
| second Intercostal space | 51 | 44.4 |
| third Intercostal space | 19 | 16.5 |
| fourth Intercostal space | 5 | 4.3 |
| Location of identifiable IMN with respect to breast primary quadrant location | ||
| Upper outer quadrant | 61 | 53.0 |
| Upper inner quadrant | 17 | 14.8 |
| Lower outer quadrant | 11 | 9.6 |
| Lower inner quadrant | 10 | 8.7 |
| Multicentric or tumour involving all quadrants | 16 | 13.9 |
| Laterality of identifiable IMN with respect to breast primary | ||
| Ipsilateral | 70/77 | 90.9 |
| Contralateral | 1/77 | 1.3 |
| Bilateral | 6/77 | 7.8 |