Esophageal squamous papilloma lacks clear clinicopathological associations

Table 1 Patient characteristics with esophageal squamous papilloma

Patient No.	Age (yr)	Sex(M/F)	Cigarette smoking (Y/N)	BMI	PPI use (Y/N)	Indication for endoscopy	Location of ESP from incisors	No. of ESPs	Endoscopic size of ESP (mm)	Histological size of ESP specimen (mm)	Hiatus hernia (Y/N)	Reflux esophagitis (Y/N)	Helicobacter pylori (positive/negative)	HPV test (positive/negative)	Method of ESP resection/sampling
1	57	F	Y	20	N	Upper GI bleed	Distal	1	Small	2	N	N	Negative	n/a	n/a
2	83	F	N	19	Y	Dyshpagia	20	1	3	3	N	Y	Negative	n/a	Snare polypectomy
3	66	M	N	24	N	Abdominal pain	32	1	Small	4	N	N	Negative	n/a	Snare polypectomy
4	74	M	N	36	N	Abdominal pain	39	1	Small	5	N	N	n/a	n/a	Hot biopsy
5	60	F	N	34	Y	GERD	33	1	4	3	Y (3 cm)	Y	Negative	n/a	Snare polypectomy
6	39	M	N	30	N	GERD	38	1	3	3	N	Y	Negative	Negative	Snare polypectomy
7	39	F	N	24	N	Bloating	28	1	3	2	N	N	Negative	n/a	Biopsy
8	33	F	N	21	N	Anaemia	27	1	Small	3	N	Y	Negative	n/a	Snare polypectomy
9	49	M	Y	30	N	Abdominal pain, family history CRC	Distal	1	Small	3	N	N	Negative	n/a	n/a
10	37	F	N	24	N	Family history of gastric cancer	32	1	1	1	N	N	Negative	Negative	Biopsy
11	54	F	Y	23	N	Variceal screen	35	1	2	4	N	N	n/a	n/a	Biopsy
12	39	M	Y	34	N	Abdominal pain	39	1	4	2	N	N	Negative	n/a	Biopsy
13	81	F	Y	28	N	Diarrhoea	25	1	Small	2	N	N	Negative	n/a	Biopsy
14	45	M	Y	31	Y	Abdominal pain	Upper third	1	2	2	N	N	Negative	n/a	Snare polypectomy
15	38	F	Y	n/a	N	Bloating, abdominal pain	25	1	n/a	1	n/a	n/a	Negative	n/a	Biopsy
16	41	F	N	27	N	Abdominal pain	35	1	12	7	N	N	Negative	Negative	Snare polypectomy

BMI: Body mass index; PPI: Proton pump inhibitor; CRC: Colorectal cancer; GERD: Gastroesophageal reflux disease; HPV: Human papilloma virus; n/a: Not available; ESP: Esophageal squamous papilloma; M: Male; F: Female; Y: Yes; N: No.