Do biopsy needle must be cancer

Not necessarily.
Biopsy is not necessarily cancer, biopsy is generally used to check benign tumors or malignant tumors, biopsy generally takes a week to give results, usually to maintain a good state of mind, can effectively help the body recovery, diet is mainly light, pay attention to personal hygiene at ordinary times, so as to avoid bacteria breeding, which will lead to more serious problems.
If there is an obvious mass, the specific nature of the case can not be judged, it is necessary to consider a biopsy pathology in time, only after the specific pathological nature of the good consideration of follow-up treatment.