Gastroenterology Research and Practice / 2019 / Article / Tab 4

Research Article

Colorectal Serrated Neoplasia: An Institutional 12-Year Review Highlights the Impact of a Screening Programme

Table 4

Characteristics of TSAs identified over a 12-year period at our institution; .

ParameterAll TSAsTSAs without dysplasiaTSAs with dysplasia

Number (, %)4013 (32.5%)27 (67.5%)
Age of patient (years)
 Median676168
 Range34-9234-8644-92
Site (, %)
 Right colon4 (10%)2 (15.4%)2 (7.4%)
 Left colon34 (85%)9 (69.2%)25 (92.6%)
 Colon NOS2 (5%)2 (15.4%)
Size (mm)
 Median131023.2
 Range2-602-204-60
Size category (, %)
 <1 cm7 (26.9%)4 (44.4%)3 (17.6%)
 ≥1 cm19 (73.1%)5 (55.6%)14 (82.4%)
Dysplasia grade (, %)
 Low24 (60%)N/A24 (88.9%)
 High3 (7.5%)N/A3 (11.1%)
Type of dysplasia (, %)
 Conventional26 (65%)N/A26 (96.3%)
 Serrated1 (2.5%)N/A1 (3.7%)

Abbreviations: TSAs: traditional serrated adenomas; NOS: not otherwise specified; N/A: not applicable.

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