Impact of parenchyma-preserving surgical methods on treating patients with solid pseudopapillary neoplasms: A retrospective study with a large sample size

Table 1 Characteristics of the study cohort stratified by surgical method

	Total (n = 166)	CM (n = 133)		PPM (n = 33)	P value
Female, n (%)	129 (77.7)	106 (77.4)		23 (69.7)	0.16
Age (yr), median (range)	32.5 (10-68)	32.0 (10-68)	33 (13-51)		0.85
Symptoms, n (%)
Accidentally found	104 (62.7)	83 (62.4)	21 (63.6)		0.84
Abdominal pain	53 (31.9)	43 (32.3)	10 (30.3)		0.75
Abdominal distension	6 (3.6)	5 (3.8)	1 (3.0)		0.8
Nausea and vomiting	2 (1.2)	1 (0.8)	1 (3.0)		0.49
Jaundice	1 (0.6)	1 (0.8)	0 (0)		0.32
Hospital stay (d) ± SD	12.53 ± 6.87	12.35 ± 6.21	13.3 ± 9.14		0.49
Total expense (yuan) ± SD	46248 ± 25414	44213 ± 20487	54084 ± 38551		0.21

SD: Standard deviation; CM: Conventional method; PPM: Parenchyma preserving method.