Pneumonia ( Chemo Side Effect)

My friend's father has been diagnosed with stomach cancer in late April. He recently completed a 5 week Chemotherapy & Radiation treatment prior to the gastrectom(Neo adjuvant). He has been suffering from serious pneumonia for the past ten days, and is presently undergoing a two week course treatment. His condition is stable, with no major improvement, but he is not getting any worse also. Has anyone went through this? He still did not go surgery. Also if anyone can tell me more about the Neo Adjuvant treatment, I will appreciate it. Prayers to all stomach cancer survivors for a speedy recovery.