What is life-threatening spleen laceration injury that Shreyas Iyer suffered?

Shreyas Iyer has been hospitalised in Sydney after suffering spleen laceration injury. He suffered injury upon impact after he took catch running backwards. A spleen laceration is a tear in the spleen, an organ that filters blood and fights infection. The injury can be life-threatening as internal bleeding from damaged spleen can lead to shock and organ failure if untreated.