Table 4. Characteristics of the 40 colorectal adenomas included in the immunohistochemistry study.
| Patienta | Age | Sex | Colorectal segment involvedb | Maximum lesion diameter [mm] | Macroscopic appearancec | Dysplasiad |
|---|---|---|---|---|---|---|
| Small polypoid lesions | ||||||
| 1 | 37 | M | S | 16 | Ip | low |
| 2 | 74 | M | D | 15 | Ip | low |
| 3 | 74 | M | S | 16 | Ip | high |
| 4 | 58 | M | T | 15 | Ip | low |
| 5 | 63 | F | S | 15 | Ip | low |
| 6 | 60 | F | S | 15 | Is | low |
| 7 | 68 | M | S | 16 | Ip | low |
| 8 | 59 | M | S | 15 | Ip | low |
| 9 | 79 | F | S | 15 | Ip | low |
| 10 | 63 | F | S | 15 | Ip | high |
| Large polypoid lesions | ||||||
| 11 * | 68 | F | S | 30 | Ip | low |
| 12 * | 83 | M | S | 40 | Ip | low |
| 13 | 72 | F | S | 30 | Ip | high |
| 14 * | 64 | M | T | 50 | Ip | low |
| 15 | 57 | F | S | 35 | Ip | high |
| 16 | 84 | M | S | 35 | Is | high |
| 17 | 78 | F | S | 45 | Is | high |
| 18 | 88 | M | S | 30 | Is | high |
| 19 | 78 | F | R | 30 | Ip | high |
| Small nonpolypoid lesions | ||||||
| 20 | 58 | F | D | 18 | IIa | low |
| 21 | 52 | F | S | 15 | IIa | low |
| 22 | 83 | M | A | 15 | IIa | high |
| 23 | 62 | F | A | 15 | IIa | low |
| 24 | 66 | M | A | 18 | IIa | low |
| 25 | 63 | M | T | 18 | IIa | low |
| 26 | 56 | F | S | 15 | IIa | low |
| 27 | 62 | F | A | 15 | IIa | low |
| 28 | 73 | F | R | 15 | IIa | low |
| 29 | 69 | F | A | 15 | IIa | SSA |
| Large nonpolypoid lesions | ||||||
| 30 | 86 | M | D | 30 | IIa | low |
| 31 | 51 | F | C | 30 | IIa | low |
| 32 | 59 | M | A | 40 | IIa | high |
| 33 | 82 | F | D | 30 | IIa | high |
| 34 | 83 | F | A | 40 | IIa | high |
| 35 | 59 | F | D | 30 | IIa | high |
| 36 | 65 | F | D | 30 | IIa | low |
| 37 | 58 | M | D | 35 | IIa | high |
| 38 | 66 | F | R | 35 | IIa | high |
| 39 | 67 | F | T | 45 | IIa | low |
| 40 | 79 | M | A | 30 | IIa | high |
a * CD4 staining was not available these lesions
b Abbreviations: C, cecum; A, ascending colon; T, transverse; D, descending colon; S, sigmoid; R, rectum
c Classified according to the Paris Endoscopic Classification of Superficial Neoplastic Lesions [29]
d Highest degree of dysplasia in the lesion based on the WHO classification of tumors of the digestive system (Editorial and consensus conference in Lyon, France, November 6–9, 1999 [IARC]). SSA: sessile serrated adenoma.