(1) This patient's history and presentation are rather typical for a sarcoma or metastatic carcinoma but not so much for a lymphoma.(2) To our knowledge, this carcinosarcoma is the seventh reported case of a primary pancreatic neoplasm with mixed carcinomatous and sarcomatous elements.(3) Composite malignant tumors containing both carcinomatous and sarcomatous components are known as carcinosarcomas.(4) Unlike carcinomas, metastatic sarcomas generally occur deeper and may not ulcerate the mucosa.(5) Cases of small composite esophageal carcinoma containing various carcinomatous and sarcomatous components are extremely rare.(6) The angiographic findings in a case of metastatic meningeal carcinomatosis and a case of primary meningeal sarcomatosis are presented.(7) Sebaceous cysts, fibromas, papillomas, adenomas, sarcomas , carcinomas, and melanomas also have been reported.(8) A phase-II study for abdominal sarcomatosis in 11 patients achieved a response in 45%, albeit the follow up was relatively short.(9) Histologically, the tumor was composed of both carcinomatous and sarcomatous elements.(10) When one encounters a patient with hydrocephalus with or without diffuse meningeal enhancement on radiologic studies, meningeal sarcomatosis should be considered in the differential diagnosis.(11) The increases were recorded for virtually all tumour types in children, while in adolescents the major changes were seen for carcinomas, lymphomas, soft tissue sarcomas , germ-cell and CNS tumours.(12) The carcinomatous component is almost always squamous cell carcinoma, and the sarcomatous component usually contains a pleomorphic spindle cell proliferation.(13) Dacarbazine is a chemotherapeutic agent that has been successfully applied to treat various types of cancer such as Hodgkin's disease, malignant melanomas, soft tissue sarcomas and advanced neuroblastomas.
