(CNN) - Kim Kardashian-West revealed on Tuesday that her two-year-old son, Saint West, spent a few nights at a hospital battling pneumonia.
The reality star took to Instagram on Tuesday to thank the doctors who helped her get through a "challenging" few days.
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"My precious baby boy is so strong! After spending three nights in the hospital & seeing my baby get multiple IV's and hooked up to oxygen machines, our end of year was challenging," Kardashian-West wrote in the caption of a photo of herself holding her Saint. "Pneumonia is so scary. I just want to thank every nurse & doctor out there who works so hard around the clock. We are so grateful for you all!"
Kardashian-West did not say in her Instagram post when Saint went to the hospital. CNN has reached out to her spokesperson for clarification.
Saint has made a full recovery, Kardashian-West said in her post.
"He's home and all better. He's so resilient," she wrote. "I'm sure he will still say the ambulance ride was cool! My strong Saint."
Kardashian-West and her husband, Kanye West, are also parents to 4-year-old North West. The couple is expecting their third child via surrogate this year.
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