The stability of osseous metastases of the spine in lung cancer – a retrospective analysis of 338 cases

Radiation Oncology

Table 5 The evaluation of the distribution of subtypes stable and instable metastases over the course of time (0–6 month)

Subtypes before radiotherapy	Subtypes after 6 month
		A	B	C	D	E	F	G	Total
	A	35	0	0	0	0	0	0	35
	B	11	54	3	0	0	0	0	68
	C	1	12	88	0	0	0	0	101
	D	1	1	5	10	0	0	0	17
	E	4	2	9	2	43	3	0	63
	F	1	1	4	0	6	22	0	34
	G	1	0	1	0	0	1	6	9
	Total	54	70	110	12	49	26	6	327

This Bowker Test showed the distribution of subtypes of Taneichi-Score before and 6 month after radiation therapy. Asymmetry was apparent (p = 0.0002) and the correlation (kappa = 0.73) was good. The evaluation of the distribution of subtypes A to G showed a major change in the direction of improvement over the course of time. Deterioration occurred in 1.8% of the cases (n = 6), improvement in 19.3% (n = 63). No change was seen in 78.9% (n = 258) of the cases.

ISSN: 1748-717X