Staging laparoscopy in esophagogastric junction cancer: Systematic review and meta-analysis

Table 3 Main characteristics of the studies and their most relevant results

Ref.	No. of patients	Study type	Country	Inspection areas	Peritoneal lavage areas	Positive in macroscopic carcinomatosis	Positive in liver metastases	Positive in ascites cytology	Positive in peritoneal lavage	Positive peritoneal malignancy	Patients who became unresectable
Halle-Smith et al[13], 2024	396	R	United Kingdom	NS	NS	29	NS	NS	29	58	58
Mitchell et al[14], 2023	79	R	United States	NS	NS	NS	NS	NS	NS	NS	12
Strandby et al[15], 2020	81	P	Denmark	NS	1, 2	6	NS	NS	4	10	10
Mirza et al[16], 2016	212	R	United Kingdom	2, 3, 4, 9, 10	NS	27	NS	NS	NS	27	27
Strandby et al[17], 2016	171	R	Denmark	NS	NP	9	4	NP	NP	9	13
Simon et al[18], 2016	41	R	France	1, 2, 3, 4, 11, 12, 13	NS	NS	NS	NS	NS	NS	5
Bhatti et al[19], 2014	60	R	Pakistan	NS	NS	5	NS	NS	12	17	17
Munasinghe et al[20], 2013	36	R	United Kingdom	4, 5, 8, 11, 12, 13, 14	1, 2, 3	2	NS	NS	3	5	5
Nath et al[21], 2008	48	P	United Kingdom	NS	NS	3	NS	NS	4	7	7
Sarela et al[22], 2006	105	NS	United States	NS	NS	40	NS	NS	NS	40	40
Clements et al[23], 2004	45	NS	United Kingdom	NS	NP	4	NS	NP	NP	4	4
Menon and Dehn[24], 2003	43	P	United Kingdom	4, 8, 9, 15	NP	6	5	1	NP	7	12
Nieveen van Dikjum et al[25], 1999	36	NS	Netherlands	4, 13, 14	NS	11	NS	NS	NS	11	11
Romijn et al[26], 1998	20	NS	Netherlands	4, 5, 9, 16, 17	NP	4	2	NP	NP	4	6
Stein et al[27], 1997	72	P	Germany	4, 7, 8, 13, 17, 18	NS	8	13	NS	12	20	33
O´brien et al[28], 1995	39	P	Ireland	NS	NP	8	1	NP	NP	8	8
Dagnini et al[29], 1986	89	R	Italy	4, 5, 6, 16, 19	NP	27	15	NP	NP	27	42
Bemelman et al[30], 1995	18	P	Netherlands	4, 8, 17	NS	NS	NS	NS	0	NS	5

R: Retrospective; P: Prospective; NP: Not performed; NS: Not specified; 1: Right upper abdominal quadrant; 2: Left upper abdominal quadrant; 3: Pelvis; 4: Liver; 5: Primary tumor region; 6: Douglas pouch; 7: Diaphragmatic hiatus; 8: Lesser sac (omental bursa); 9: Greater omentum; 10: Lesser omentum; 11: Treitz angle; 12: Foramen of Winslow; 13: Hepatoduodenal ligament; 14: Transverse mesocolon; 15: Left gastric artery; 16: Diaphragm; 17: Celiac lymph nodes; 18: Lesser curvature of the stomach; 19: Gastrohepatic ligament.