摘要
The incidence of gastric cancer ranks the fourth in all kinds of cancers in the world,ranking the second among patients with cancer-related deaths.The 5-year survival rate of gastric cancer patients is less than 30％.About 50％ of gastric cancer patients have recurred or metastasized after curative resection.Metastasis and recurrence are the major causes of death in cancer patients.CTCs play an important role in tumor metastasis.At present,there are more than 10 kinds of detection methods for CTCs in gastric cancer.The most widely used methods are RT-PCR,FCM,CelLTracks(R) AutoPrep(R) system and ISET.Recent studies have shown that CTCs in peripheral blood of patients with gastric cancer can be used to determine the clinical stage of patients,assess the prognosis and guide the individualized treatment of cancer.
摘要
Pleomorphic adenoma is also called a mixed tumor and it most commonly occurs in the salivary gland. This neoplasm has a low grade malignant potential, but it may also show aggressive clinical behavior like recurrence or metastasis. We report here on a case of a tumor that was confirmed to be primary pulmonary carcinoma ex-pleomorphic adenoma by the pathologic examination after complete resection, and it had the characteristics of malignant neoplasms, such as multiple metastases.