'Tree man' Abul Bajandar, is set to have a second surgery after his 'Groot-like' roots have grown back. The man from Bangladesh has a rare disease called epidermodysplasia verruciformis that causes giant warts to grow on his hands and feet. The warts resemble roots or branches of a tree.
He had a previous surgery for the affliction, but the warts have grown back. Here's a story from 2 years ago, when he first became known to the world.
This disease was also in an episode of Grey's Anatomy.