The Catcher In The Rye - Chapter 8

Holden walked to the train station to catch a train to New York. A lady sits next to him on the train, and eventually he finds out she's a mother to one of the boys from Pencey. She asks who he is and if he knows her son, and he tells her his name is Rudolf Schmidt, the janitor of their dorm. After they talked about her son for a while, she asked him why he was going home that night. He told her that he had to have an operation for a brain tumor.