Season 4 - Episode Guide

Jay, five, is blind and has no nose. Now an American family have fallen in love with him and want to adopt. Sambany has a skull tumour bigger than his head, can doctors operate?

Joelison from Brazil is 237 cm tall. His wife is just 152 cm. What's stopping them having children? In Colombia, Sharick, falls asleep for up to a month. Can doctors cure her?

Uncovering stories of people round the world who suffer from rare and mysterious medical conditions. Some require surgery so complex that the odds of survival are minimal at best.

Uncovering stories of people round the world who suffer from rare and mysterious medical conditions. Some require surgery so complex that the odds of survival are minimal at best.

Arun, from India, has four legs, with the second pair growing from his back. He travels to Delhi to seek an operation, but will doctors be able to help and will his family agree?

Laisha, eight, from Texas, is just 70cm tall and has an incredibly rare form of dwarfism. She travels to a region of Ecuador where hundreds of people have the same condition.

Laxmi, from India, was born with a huge facial tumour giving her the appearance of the Hindu god Ganesh. Can surgeons save her face?

Body Bizarre. In Sweden, Kim has had dozens of surgeries on a huge facial tumour but stopped after a near death experience. Now he needs one more operation but can he go through with it?

Khalida goes to a hospital in Kashmir after suffering intense stomach pains. Doctors operate and are astonished to discover the world's biggest ovarian cyst.