English Brain tumor Cited by user Citation bot on 16 Mar 2020 A brain tumor occurs when abnormal cells form within the brain. There are two main types of tumors: cancerous (malignant) tumors and benign (non-cancerous) tumors.
English Brain tumor Cited by user Citation bot on 16 Mar 2020 A brain tumor occurs when abnormal cells form within the brain. There are two main types of tumors: cancerous (malignant) tumors and benign (non-cancerous) tumors.