One of the most documented sufferers of the condition will soon be able to leave hospital after groundbreaking treatment.
Abul Bajandar, a Bangladeshi known as "tree man" has had at least 16 operations, at the same hospital where Sahana is receiving treatment to remove 5kg of growths from his hands and feet. He could become the first person to be cured of the condition.
"Bajandar's cure was a remarkable milestone in the history of medical science," Sen said last month.
"We operated on him at least 16 times to remove the warts. The hands and feet are now almost fine. He will be discharged within next 30 days after a couple of minor surgeries to perfect the shape of his hands."
Bajandar said his surgeries had allowed him to hold his daughter once again.
"I never thought I would ever be able to hold my kid with my hands," he said.
"Now I feel so much better, I can hold my daughter in my lap and play with her. I can't wait to go back home."
Last year an Indonesian man died of the rare genetic condition.