Mycoplasma infections and different human carcinomas

Table 1 Mycoplasma infection in different grades of gastric carcinoma

Infection of mycoplasma
Grades of differentiation	Total number of cases	Negative cases (-)	Positive cases		Total positive cases	Ratio of positive (%)
			(+)	(++)
I-II	23	3	12	8	20	87
II-III	18	7	9	2	11	61
III	49	30	14	5	17	39
Total	90	40	35	14	50	56

Table 2 Comparison of mycoplasma infection in gastric carcinoma and in the other gastric diseases

	Infection of mycoplasma
	Negative cases	Positive cases	Total number of cases	Ratio of positive (%)
Chronic superficial gastritis	34	13	47	28
Intestinal metaplasia	31	18	49	37
Gastric ulcer	32	14	46	30
Gastric carcinoma	40	50	56	56
Total number of cases	137	95	50 (mean)	40 (mean)

Table 3 Mycoplasma infection in different grades of colon carcinoma

Infection of mycoplasma
Grades of differentiation	Total number of cases	Negative cases (-)	Positive cases		Total positive cases	Ratio of positive (%)
			(+)	(++)
I-II	42	15	15	12	27	64
II-III	8	5	2	1	3	37
III	8	6	2	0	2	30
Total	58	26	19	13	32	55 (mean)

Table 4 Mycoplasma infection in other carcinoma tissues

Infection of mycoplasma
Types of carcinoma	Total number of cases	Negative cases (-)	Positive cases		Total positive cases	Ratio of positive (%)
			(+)	(++)
Esophagus	53	26	21	6	27	50.9
Lung	59	28	23	8	31	52.6
Breast	63	38	17	8	25	39.7
Glioma	91	53	27	11	38	41.0
Total	266	145	88	33	121	45.5