Sanju Bhagat, a 36-year-old man from Nagpur, India, faced a life-threatening situation when his swollen abdomen began to press against his diaphragm, making it difficult to breathe. Initially thought to be a massive tumor, surgery at a hospital in Mumbai revealed a shocking truth: Bhagat had a rare condition known as 'foetus in fetu,' where a malformed twin had been growing inside him for his entire life. This condition occurs when one twin becomes trapped within the other during pregnancy, leading to the parasitic twin drawing nutrients from the host. Medical experts estimate that there are only 100 to 200 documented cases of this condition worldwide, typically discovered in infancy. Bhagat's case was particularly unusual as he lived with it undetected for 36 years. The surgical team found recognizable body parts, including limbs and hair, weighing several kilograms. After the surgery, Bhagat was able to breathe normally again but opted not to see the disturbing remains of his twin that were removed.