Governor Murphy has announced that he has a 3-cm tumor on his left kidney.  Next month he will undergo a partial nephrectomy to remove the tumor.  The Governor's prognosis is good and his condition is fully treatable since the tumor was discovered early.  

Lt. Sheila Oliver will serve as Acting Governor while Governor Murphy is undergoing surgery.  Read more about it in NJ.Com article Governor Phil Murphy Has Tumor on Kidney Likely Cancer.