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Distant metastasis in the biopsy and non-biopsy groups.
| No. of lung metastases | ||||||||
|---|---|---|---|---|---|---|---|---|
| Groups | n | Total | Grade I | Grade II | Grade III | Grade IV | Lymphatic metastasis, n (%) | Cardiac metastasis, n (%) |
| Biopsy | 14 | 35a | 24 | 6 | 3 | 2 | 5 (35.71) | 4 (28.57) |
| Non-biopsy | 15 | 24 | 18 | 4 | 3 | 0 | 4 (26.67) | 3 (20.00) |
| Z/χ2 value | – | −3.29 | 0.28 | 0.29 | ||||
| P-value | – | 0.001 | 0.58 | 0.46 | ||||
P<0.05 vs. the non-biopsy group.
