Table 2 Characteristics of the 50 patients with precancerous colorectal lesions included in the study

Patient no.	Sex	Age	Colon segment involved ^a	Maximum lesion diameter (mm)	Macroscopic appearance ^b	Pit pattern ^c	Microscopic appearance	Dysplasia ^d	No. of lesions present ^e
1	F	75	Tra	20	IIa	IIIS-IIIL	VA	High	7
2	F	75	Tra	40	IIa-IIc	IIIS-IIIL	TA	High	1
3	F	54	Cec	45	IIa	IIIL	TVA	Low	16
4	M	73	Asc	30	Is	nr	TVA	High	1
5	F	69	Asc	45	Ip	nr	TVA	high	1
6	M	74	Rec	40	Is	IV	VA	high	2
7	M	80	Asc	40	IIa	IIIL	TVA	Low	1
8	M	77	Cec	25	IIa	IIIL	VA	Low	1
9	M	71	Sig	30	IIa	IIIL	TVA	Low	2
10	M	89	Rec	30	Is	IV	TA	Low	3
11	F	85	Sig	25	Is-IIa	IV	TA	Low	1
12	F	63	Sig	35	Ip	IV	VA	Low	1
13	M	82	Asc	15	IIa	IIIL	VA	Low	2
14	F	73	Asc	25	IIa-IIc	IIIs-IIIL	TA	Low	1
15	F	70	Cec	25	IIa	IIIL	TVA	Low	2
16	M	70	Asc	15	Is	IV	TVA	Low	7
17	M	63	Asc	45	Is	IIIL-IV	TVA	Low	1
18	F	73	Sig	20	Ip	IV	TVA	Low	1
19	M	60	Des	30	Is	IV-Vi	TVA	High	1
20	M	68	Asc	30	Is-IIa	IIIL-IV	TVA	High	1
21	M	55	Cec	25	Is-IIa	IIIL-IV	SSA	Low	1
22	M	64	Sig	12	Ip	IIIL	TA	Low	1
23	M	78	Asc	50	Is	IV-Vi	TA	Low	1
24	F	69	Rec	90	Is-IIa	IV	TVA	Low	1
25	F	78	Rec	60	Is-IIa	IV	TVA	Low	1
26	M	72	Asc	30	Is	IV	TVA	High	2
27	M	76	Sig	30	Is	IV-Vi	TA	High	1
28	M	75	Rec	25	Is	IV-Vn	TVA	High	6
29	M	66	Asc	30	IIa	IIIL	TA	High	2
30	F	66	Asc	30	Is-IIa	IV	TA	High	2
31	M	75	Tra	18	IIa	IIIL	TA	Low	1
32	M	61	Asc	40	Is-IIa	IV	TVA	Low	20
33	M	84	Cec	30	Is	Vn	TVA	High	1
34	M	59	Tra	30	IIa-IIc	IIIs-IIIL	TA	Low	1
35	F	73	Rec	50	Is	IV	VA	Low	1
36	F	73	Des	25	Is	IV	TA	Low	1
37	M	59	Rec	60	Is	IV-Vi	TVA	High	1
38	M	75	Asc	40	IIa	II	TA	Low	6
39	M	75	Asc	50	Is	Vn	TVA	High	7
40	M	77	Sig	25	IIa-IIc	IIIs-IIIL	TA	Low	1
41	F	72	Asc	20	Is	IV	TVA	Low	1
42	F	66	Sig	35	Ip	IV	TA	Low	1
43	F	78	Rec	45	Ip	IV	TVA	High	1
44	M	74	Sig	25	Ip	IIIs-IV	TA	Low	1
45	M	60	Cec	30	Is	IV	TVA	Low	2
46	M	62	Des	22	Ip	nr	TA	Low	1
47	F	68	Asc	16	IIa	nr	TA	High	1
48	F	46	Des	30	Ip	nr	TVA	High	2
49	M	75	Cec	20	Is	nr	TVA	Low	1
50	M	59	Sig	8	Ip	nr	TA	Low	2

^aAbbreviations: Asc, ascending colon; Cec, cecum; Des, descending colon; nr, pit pattern not reported by the endoscopist; Rec, rectum; Sig, sigma; SSA, sessile serrated adenoma; TA, tubular adenoma; Tra, transversum; TVA, tubulovillous adenoma; VA, villous adenoma.
^bClassified according to the Paris Endoscopic Classification of Superficial Neoplastic Lesions.⁶⁰
^cKudo classification of colonic crypt morphology.⁶¹
^dHighest degree of dysplasia in the lesion based on the WHO classification of tumors of the digestive system.⁶²
^eTotal number of lesions noted during the study colonoscopy, including those used in the present study.

Search