Severe lumbar canal stenosis? The cauda equina roots above the level of stenosis often look wavy, bunched, redundant. Like cars slowing and zig-zagging before a traffic jam 🚗🚙🚕. Pitfall ⚠️ Don’t mistake this for arachnoiditis or tumor. Context and level are key. Wisdom ✨ Where the canal narrows, the roots above tell the tale. Sometimes the “jam” is best seen in the queue, not just at the bottleneck. —Pearls, pitfalls and wisdom from my reporting list