Table 1.

Eligible studies in the last 20 years.

Author	N. of cases (Total 49)	Comorbidities	Clinical manifestations	Types of foreign bodies	Complications after surgery	Postop. hospital stay (days)	Foreign bodies size (mm)	Time since ingestion (days)	Endoscopic unsuccessful causes	Age
Peng A [5]	16	ND	6 abscesses, 10 perforations	6 dental prostheses, others ND	None	31 (average on total of 121 patients	ND	ND	6 caught in the esophageal wall, 10 not detected for extraluminal penetration	Adults
Sawayama H [6]	7	4 dementia, 3 schizophrenia	1 cough phlegm, 1 dyspnea, 1 odynophagia, 1 dysphagia, 1 fever, 2 denture loss, 2 perforations	7 partial dentures with sharp clasps	3 tracheostomies	23.86	54×36 mm	ND	7 clasps invaginated in the esophageal mucosa	Adults
Yadav R [7]	5	ND	ND	5 dental plate with hooks	None	7+2	ND	4.8+1.92	5 caught in the esophageal wall	Adults
Okugbo SU [8]	3	ND	ND	3 dentures	ND	ND	ND	ND	ND	Adults
Toshima T [9]	3	1 schizophrenia, 1 brain paralysis, 1 cerebral hemorrhage sequelae	1 odynophagia and precordialgia, 1 perforation	3 dentures with sharp clasps	None	ND	ND	ND	2 caught in the esophageal mucosa, 1 caught in the esophageal wall	Adults
Orji FT [10]	3	ND	ND	1 metal beer-bottle cap, 1 large denture, 1 fish hook	None	ND	ND	ND	3 caught in the esophageal wall	ND
Nwaorgu OG [11]	3	ND	3 perforations	3 dentures	ND	ND	ND	4 (mean duration before presentation)	3 failed extraction via rigid esophagoscopy	Adults
Al-Sebeih K [12]	6	ND	5 dysphagia, 2 neck pain, 1 mild trismus, 1 fever, 2 right neck swelling, 1 left neck swelling, 1 edema of hypopharynx, 4 abscesses, 6 perforations	5 fish bone, 1 steel wire	ND	ND	ND	<1–5	6 no evidence of intraluminal foreign bodies for extraluminal penetration	Adults
Predescu D [13]	3	No	3 perforations, 3 abscesses	ND	ND	ND	ND	ND	ND	Adults

ND – not detectable.