X-ray diagnosis of synchronous multiple primary carcinoma in the upper gastrointestinal tract

Table 4 Clinicopathological differences of gastric lesions between gastric multiple primary carcinoma and esophageal-gastric multiple primary carcinoma

	GMPC			EGMPC
	Total (n =16)	Main lesion	Additional lesion	(n = 27)
Location
Cardia	8	1	7	16
Fundus	0	0	0	1
Body	3	3	0	3
Antrum	5	4	1	7
Largest dimension of lesions (cm)
Mean ± SD1	2.94 ± 1.39	3.93 ± 1.21	1.94 ± 0.62	4.94 ± 2.63
95% CI	2.20-3.68	2.93-4.95	1.42-2.46	3.90-5.98
Morphology
Hyperplastic	13	5	8	17
Ulcerative	1	1	0	6
Infiltrative	2	2	0	4
Histology
Squamous cell carcinoma	0	0	0	4
Adenocarcinoma	16	8	8	23
PT stage2
T1	6	1	5	3
T2~4	10	7	3	24

¹Largest dimension of gastric lesions (cm) between main lesion and additional lesion, t = 4.161, P = 0.001. Largest dimension of gastric lesions (cm) between gastric multiple primary carcinoma (GMPC) and esophageal-gastric multiple primary carcinoma (EGMPC), t = 2.820, P = 0.007.

²PT stage of gastric lesions between main lesion and additional lesion, χ² = 4.267, P = 0.039, PT stage of gastric lesions between GMPC and EGMPC, χ² = 4.227, P = 0.040.