Primary malignant tumor of the small intestine

Table 1 Pathological types and distributions

Type of neoplasms	Number by region
	Duodenum	Jejunum	Ileum	Total
Leiomyosarcoma	5	14
Adenocarcinoma	10	9	6	25
Malignant lymphoma	2	4	14	20
Malignant fibrous histiocytoma		1	1	2
Malignancy of neurofibroma			1	1
Malignancy of fibroma	1			1
Total	18	28	29	75

Table 2 Clinical manifestations

Symptom	Abdominal pain	Abdominal mass	Emaciation	Intestinal obstruction	Melena	Acute peritonitis	Jaundice	Fever	Anemia
Number	45	43	18	11	6	5	5	4	3
%	60	57.3	24	14.7	8	6.7	6.7	5.3	5

Table 3 Survival rate by operation type

Operation type	n	Survival rate (%)
		1 year	3 years	5 years
Radical resection	37	87.5	68.7	48.1
Palliative resection	21	57.9	33.8	24.1
Symptom-relieving and exploratory operation	13	42.9	21.4	0.0

Table 4 Survival rate by pathological type

Pathological type	n	Survival rate (%)
		1 year	3 years	5 years
Adenocarcinoma	25	53.9	27.9	14.0
Leiomyosarcoma	26	95.8	82.1	57.5
Malignant lymphoma	20	48.6	39.7	23.8

Table 5 Survival rate by location of tumor

Location of tumor	n	Survival rate (%)
		1 year	3 years	5 years
Duodenum	17	69.2	38.5	0.0
Jejunum	27	81.8	59.6	50.4
Ileum	27	51.1	29.2	17.5