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When to consider right hemicolectomy in T1 tumors.12
| T stage | Guideline recommendation |
|---|---|
| T1a | Tumor located at the appendiceal base |
| Mesoappendiceal invasion >3 mm | |
| T1b | Young patientsa |
| World Health Organization grade: G2 | |
| Vascular (V1) or lymph vessel (L1) invasion | |
| Mesoappendiceal invasion >3 mm |
There is an increased risk of incomplete resection or late recurrence.
