Frequency of Certain Established Risk Factors in Soft Tissue Sarcomas in Adults: A Prospective Descriptive Study of 658 Cases

Table 1

Characteristics of 658 patients with visceral and soft tissue sarcomas treated at Oscar Lambret Cancer Centre between January 1997 and September 2005. MPNST: malignant peripheral nerve sheath tumour.

Sex ratio	309 males/349 females
Age	Median: 52 (18–99)
	Mean: 52.4 (+/− 17.5)
Parameter	Number of cases	Percentage	95%-CI
Liposarcoma	132	20.0	17–23
Leiomyosarcoma	113	17.0	14–20
Malignant histiocytofibroma	77	12.0	9–14
Undifferentiated sarcoma	65	9.8	7–12
Synovialosarcoma	43	6.5	4–8
Aggressive fibromatosis	32	4.8	3–6
Angiosarcoma	28	4.2	3–6
Rhabdomyosarcoma	26	4.0	2–5
MPNST	24	3.6	2–5
Others	118	18.0	15–20
Grade 1	97	25.2	21–30
Grade 2	101	26.3	22–30
Grade 3	186	48.4	43–53
Lower limbs	225	34.2	30–38
Chest wall	99	15.0	12–17
Upper limbs	86	13.0	9–14
Retroperitoneum	69	10.4	8–12
Head and neck	48	7.2	5–9
Uterus	41	6.2	4–8
Abdominal wall	40	6.0	4–8
Breast	30	4.5	3–6
Pelvis	13	1.9	1–3
Others	7	1.0	3–6