Prognostic Factors and Metastatic Patterns in Primary Myxoid/Round-Cell Liposarcoma

Table 1

Risk factors for local recurrence at 5 years following tumour resection with hazards ratio estimates, 95% confidence limits and 𝑃 values.

Factor	5 years risk of LR	HR	95% CI	𝑃 value
Overall	13%
Depth:
Superficial	9%	1.46	0.42–5.00	0.55
Deep	14%	1
Size:
Up to 5 cm	50%	2.285	0.63–8.27	0.208
>5 cm to <10 cm	7%	0.681	0.24–1.96	0.476
>10 cm	14%	1
Site:
Lower extremity	12%	0.269	0.06–1.18	0.081
Upper extremity	40%	1
Trunk	20%	0.605	0.60–6.76	0.683
Histology:
Pure myxoid	9%	1
0–5% round cell	4%	0.472	0.055–4.04	0.493
>5% round cell	26%	3.321	1.12–9.82	0.03
Margin:
Intralesional	34%	2.445	0.85–7.06	0.098
Marginal	6%	0.395	0.13–1.21	0.103
Wide	15%	1
Surgery:
Amputation	10%	0.625	0.083–4.69	0.648
Limb salvage	13%	1
Postoperative radiotherapy	11%	1
No radiotherapy	17%	1.13	0.429–2.977	0.80