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Postsurgical radiation therapy for gastric carcinosarcoma with c-kit expression: A case report

Postsurgical radiation therapy for gastric carcinosarcoma with c-kit expression: A case report
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摘要 Gastric carcinosarcomas are rare morphologically biphasic tumors, consisting of carcinoma and sarcoma components, with a poor clinical course.Here we report the case of a 70-year-old man with advanced Borrmann type Ⅲ carcinosarcoma arising from the upper body of the stomach with extensive lymph node metastasis who underwent a total, but palliative, gastrectomy.Histology showed the tumor consisted of a biphasic structure of tubular adenocarcinoma and spindle cellsarcoma.Immunohistochemistry revealed sarcoma cells expressing c-kit(CD117) and CD34, which are criteria for gastrointestinal stromal tumors.Nine months after the surgical operation, tumor metastases had extended to the hepatohilar, retroperitoneal and mediastinal lymph nodes.Radiation therapy of 50 Gy markedly decreased the size of each of these nodes and reduced the risk of respiratory complications and jaundice.However, the patient died of respiratory failure due to bronchopneumonia with multiple lung metastases 22 mo after resection.Autopsy revealed severe necrosis in most of the lymph nodes with tumor metastases.Radiation therapy combined with gastrectomy should be considered to improve survival in patients with gastric carcinosarcomas that express c-kit. Gastric carcinosarcomas are rare morphologically biphasic tumors, consisting of carcinoma and sarcoma components, with a poor clinical course.Here we report the case of a 70-year-old man with advanced Borrmann type Ⅲ carcinosarcoma arising from the upper body of the stomach with extensive lymph node metastasis who underwent a total, but palliative, gastrectomy.Histology showed the tumor consisted of a biphasic structure of tubular adenocarcinoma and spindle cellsarcoma.Immunohistochemistry revealed sarcoma cells expressing c-kit(CD117) and CD34, which are criteria for gastrointestinal stromal tumors.Nine months after the surgical operation, tumor metastases had extended to the hepatohilar, retroperitoneal and mediastinal lymph nodes.Radiation therapy of 50 Gy markedly decreased the size of each of these nodes and reduced the risk of respiratory complications and jaundice.However, the patient died of respiratory failure due to bronchopneumonia with multiple lung metastases 22 mo after resection.Autopsy revealed severe necrosis in most of the lymph nodes with tumor metastases.Radiation therapy combined with gastrectomy should be considered to improve survival in patients with gastric carcinosarcomas that express c-kit.
出处 《World Journal of Gastroenterology》 SCIE CAS 2015年第9期2830-2835,共6页 世界胃肠病学杂志(英文版)
关键词 CD34 C-KIT GASTRIC CARCINOSARCOMA Radiation therap CD34 C-kit Gastric carcinosarcoma Radiation therap
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