A tumor may return.Logical formLearned from37 sentences. A (blood supply) may pertain-to a tumor.Logical formLearned from37 sentences. (Tumor cells) can be isolated.Logical formLearned from37 sentences. Tumors can be bilateral.Logical formLearned from37 sentences. Tumors may pertain-to a pancreas.Logical formLearned from36 sentences. Tumors can be benign.Logical formLearned from36 sentences. Tumors may form.Logical formLearned from36 sentences. A tumor may be gone.Logical formLearned from36 sentences. A tumor may spread.Logical formLearned from36 sentences. A tumor can be fibrous.Logical formLearned from36 sentences. A (brain tumor) can be rare.Logical formLearned from36 sentences. Tumors can be sporadic.Logical formLearned from36 sentences. Tumors may shrink.Logical formLearned from36 sentences. A tumor may undergo a discovery.Logical formLearned from35 sentences. Tumors may undergo a development.Logical formLearned from35 sentences.