Table 2 Correlations between PTEN mutations and clinical pathologic characteristics of all patients with PSCCE (n = 38)

From: High-incidence of PTEN mutations in Chinese patients with primary small cell carcinoma of the esophagus

Characteristic	All patients	PTEN mutation	X²	P value
	No. of cases	No. of cases (%)
Gender
Male	31	12 (38.71)	0.252	0.615
Female	7	2 (28.57)
Age
<60	16	7 (43.75)	0.567	0.452
≥60	22	7 (31.82)
Tumor location
Upper 1/3	4	1 (25)	0.634	0.728
Middle 1/3	23	8 (34.78)
Lower 1/3	11	5 (45.45)
TNM stage
cI	3	1 (33.33)	0.866	0.648
cIIa-cIIb	17	5 (29.41)
cIII	18	8 (44.44)

TNM stage: The AJCC (6th edition) was used for staging. Abbreviations: c, clinical.
P-values < 0.05 were considered as statistically significant.

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