Hello, thanks for posting this question in HCM Let me tell you that a given medical symptom can be due to various causes and the outcome depends upon the cause. For example fever can be due to malaria, typhoid, tubeculosis, cancer and AIDS too. Now you can realize that which fever will have a good outcome. Back toy your question of sleep apnea, i will stress that sleep apnea is usually due to obstructive causes like your daughter in young age. In old age it is due typo other causes and hence treatment of sleep apnea in young and old age is different. I will further stress that whether the mass is going to recur or not or your daughter would have other problem will depend upon the biopsy of the detailed histopathology report. For example if it com,es out to be tonsilar or infected tissue, she will have the best outcome. If it turns out to be lymphoma, then the duty of the doctor should be to type the exact types of lymphoma. There are various types of lymphoma and the treatment depends upon the exact type too. My advise to you will be not to loose hope and just wait for a detailed hisptopathology report and decide accordingly. If it turns out to be lymphoma, though rare chance, hen please consult a local hematologist. I hope this will help you