A 26-year-old man in Binh Dinh province is suffering from a rare medical condition: a tumor on one of his testicles has grown extremely large while a thick, black, hairy patch of skin covers his body from the navel to the knee.

When Dao Van Dong was 6 years old, his parents discovered a small lump in one of his two testicles but they thought is was just a zit. But it turns out to be a tumor which has grown larger and larger and dominated Dong’s private parts.

Dong also has a tumor on the buttock. According to doctors, due to the two tumors and Dong’s chromosomal abnormalities, a hairy, black, thick patch of skin covers his body from the navel to the knee.

In 2002, he had a surgery to remove the tumor from his right buttock but after a short time, the tumor grew bigger again while Dong began to get thin and weak.

When he was at grade 8, Dong quit school due to poor memory, shame and health.

His face and breast also have black hairy spots.