Is there a difference between 19G core biopsy needle and 22G core biopsy needle in diagnosing the correct etiology? - A meta-analysis and systematic review

Table 1 Basic characteristics of the studies

Ref.	Type of article/study	Needle type	Number of biopsies	Type of lesion	Accurate diagnoses (TP and TN)
Irions et al[40], 2011	Abstract	22G	6	Pancreatic adenocarcinoma, esophageal SCC	4
Barresi et al[44], 2014	Full article	22G	60	Pancreatic lesions	36
Alatawi et al[17], 2015	Full article	22G	50	Pancreatic lesions	48
Vanbiervliet et al[33], 2014	Full article	22G	80	Adenocarcinoma, metastatic lung cancer	67
Ganc et al[19], 2014	Full article	22G	15	Pancreatic mass lesions	8
Ramay et al[48], 2013	Abstract	22G	24	Perigastric, peripancreatic subcarinal, mediastinal lymph nodes	24
Larghi et al[43], 2011	Full article	22G	61	Adenocarcinoma, neuroendocrine tumors, lymphoma	54
Strand et al[34], 2014	Full article	22G	28	Solid pancreatic neoplasms	7
Bang et al[32], 2012	Full article	22G	28	Pancreatic masses	25
Ganc et al[19], 2014	Abstract	22G	30	Pancreatic masses	28
Krishnamurthy et al[45], 2013	Abstract	22G	37	Adenocarcinoma, neuroendocrine tumors	24
Komanduri et al	Abstract	22G	10	Pancreatic lesions	10
Kim et al	Full article	22G	12	GI stromal tumors, pancreatic masses, lymphoma	9
Ramay et al[48], 2013	Abstract	22G	40	Pancreatic lesions	40
Park et al[47], 2012	Abstract	22G	43	Solid pancreatic lesions	32
Fabbri et al[46], 2015	Full article	22G	68	Solid pancreatic lesions, pancreatic cystic lesions	56
Petrone et al[39], 2012	Abstract	19G	49	Pancreatic mass, submucosal lesions, mediastinal mass	46
Iglesias-García et al[41], 2014	Full article	19G	114	Pancreatic tumors, mediastinal lymphadenopathy, intraabdominal masses	106
Komanduri et al	Abstract	19G	10	Pancreatic lesions	10
Lovacheva et al[35], 2013	Abstract	19G	23	Mediastinal lymph nodes	19
Iglesias-García et al[41], 2014	Full article	19G	87	Pancreatic tumors, mediastinal lymphadenopathy, intraabdominal masses	83
Irions et al[40], 2011	Abstract	19G	6	Pancreatic adenocarcinoma, GIST, benign lymph nodes	4

TP: True positives; TN: True negatives; SCC: Squamous cell carcinoma; GI: Gastrointestinal; GIST: Gastrointestinal stromal tumors.