The Regularity of the Site of Impaction in Recurrent Gallstone Ileus: A Systematic Review and Meta-Analysis of Reported Cases

Table 1

Demographic and clinical characteristics of patients.

	Variable	#Summary n (%) or median (Q1, Q3)
IGSI	ISOI (N = 47)
	Jejunum	16 (34.0%)
	Ileum	29 (61.7%)
	Others	2 (4.3%)
	Stone ≥ 3 cm (N = 33)	25 (75.8%)
	Faceted stone (N = 18)	12 (66.7%)
	Number of stones (N = 52)
	One	41 (78.8%)
	Two	8 (15.4%)
	More than two	3 (5.8%)
	Surgery (N = 51)
	Enterolithotomy	42 (82.4%)
	Enterolithotomy + segmental resection	5 (9.8%)
	Others	4 (7.8%)
RGSI	Time of recurrence (days) (N = 56)	20.5 (8.5, 95.5)
	RSOI (N = 50)
	Jejunum	15 (30.0%)
	Ileum	31 (62.0%)
	Others	4 (8.0%)
	Age (years) (N = 55)	70.0 (63.0, 76.0)
	Sex (women) (N = 55)	48 (87.3%)
	Symptoms (RGSI) (N = 47)
	Abdominal pain	44 (93.6%)
	Vomit	38 (80.9%)
	Nausea	16 (34.0%)
	Constipation	5 (10.6%)
	Symptom duration (RGSI) (N = 18)	2.5 (1.0, 7.0)
	Surgery (RGSI) (N = 53)
	Enterolithotomy	42 (79.2%)
	Enterolithotomy + cholecystectomy	5 (9.4%)
	Enterolithotomy + segmental resection	2 (3.8%)
	Others	4 (7.5%)
	Mortality (RGSI) (N = 51)	6 (11.8%)
	Complications (RGSI) (N = 46)	13 (28.3%)

^#Continuous variables are presented as median and IQR and categorical variables as number (n) and (percentage); N represents the total number of patients for whom the data was available for that particular variable; IQR: interquartile range; GSI: gallstone ileus; RGSI: recurrent gallstone ileus; IGSI: index gallstone ileus; ISOI: site of impaction in index gallstone ileus; RSOI: site of impaction in recurrent gallstone ileus.