When he was finally admitted to hospital with the enormous growth, his head had swelled so much that it looked like he had another head mounted on top of his.
For the past several years, Santlal Pal had been watching a tumor emerge from his skull.
"After the patient regained consciousness, we researched and concluded this was the world's heaviest tumour to be reported so far", he added.
Besides, the blood vessels were very long, winded and enlarged, posing a bigger challenge to the medical team, and owing to the massive pressure on the brain he had become completely blind.
In 2008, doctors at the Sir Ganga Ram Hospital in New Delhi had removed a brain tumor, which was 78 cubic inches, or the size of two baseballs, from a woman.
Pal, who is from Allahabad, felt a bump at the back of his head nine months ago. The mass appeared as large or larger than Santlal Pal's head.More news: Republican lawmaker fires aide for falsely calling Parkland students 'actors'
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He had been to three hospitals in Uttar Pradesh before the procedure in Mumbai but the doctors in those places had termed the tumor untreatable.
During the surgery, he required 11 units of blood transfusion and post-operation, he was put on ventilation support for three days.
Doctors are now waiting to see whether Pal will regain his eyesight.
Scans revealed the tumor had invaded the patient's brain on both sides of the midline through his skull bone.
According to Nadkarni, 90 percent of the tumor was located between Pal's skull and his scalp; just 10 percent of the tumor grew within the skull.
Trimurti Nadkarni, the neurosurgeon who led the five-member medical team that excised the tumor, said that Pal's tumor was so large that it looked like he had two heads. For instance, surgery on a tumor near nerves that connect to your eyes may carry a risk of vision loss.