Cancer of unknown primary (CUP)
Date
2005Source
Critical reviews in oncology/hematologyVolume
54Issue
3Pages
243-250Google Scholar check
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Carcinoma of unknown primary (CUP) is one of the 10 most frequent cancers worldwide. It constitutes 3-5% of all human malignancies. Patients with CUP present with metastases without an established primary site. CUP manifests as an heterogenous group of mainly epithelial cancers recognised by distinct clinicopathological entities. The diagnostic work-up includes extensive histopathology investigations and modern imaging technology. Nevertheless, the primary tumour remains undetected most of the time. Certain clinicopathological CUP entities are considered as favourable subsets responding to systemic platinum-based chemotherapy or managed by locoregional treatment. These subsets are: the poorly differentiated carcinomas involving the mediastinal- retroperitoneal nodes, peritoneal papillary serous adenocarcinomatosis in females, poorly differentiated neuroendocrine carcinomas, isolated axillary node adenocarcinomas in females or cervical nodal involvement by a squamous cell carcinoma. Patients who belong to the non-favourable subsets have a worse prognosis. © 2005 Published by Elsevier Ireland Ltd.
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