Neurosurgeon Ng Wai Hoe beginning the process of removing a tumour from Mr Oh Zhi Long's brain at Tan Tock Seng Hospital on March 28 last year. The job is a delicate one: remove too little tissue and the tumour will come back. But take out too much from the wrong spot and Mr Oh could be unable to speak, or be paralysed.
Neurosurgeon Ng Wai Hoe reveals the considerations taken into account before and during the tough process of brain surgery
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