| Grade | Endoscopic Appearance |
|---|---|
| I | Limited to vocal process, no ulceration, sessile |
| II | Limited to vocal process, ulcerated or pedunculated |
| III | Extending beyond vocal process, not crossing midline of fully abducted vocal fold |
| IV | Extending beyond vocal process, over midline of fully abducted vocal fold |
| A | Unilateral |
| B | Bilateral |