We report two cases of metastatic malignant peritoneal mesothelioma. In one case, malignant metastatic cells were identified in cervical lymph nodes while in the other case, the cells were found in the liver. In both cases, metastases were identified before discovering the primary tumor. This led to the misdiagnosis of carcinoma of unknown origin. Nevertheless, the histological and immuno-histochemical patterns were typical of malignant mesothelioma. Regarding metastasis of unknown origin, a differentiation of epithelioid peritoneal malignant mesothelioma and adenocarcinoma proved to be difficult. Therefore, we discuss the diagnostic usefulness of immuno-histochemical mesothelioma markers. PMID: 26993587 [PubMed - as supplied by publisher] (Source: Annales de Pathologie)
from MedWorm: Mesothelioma http://medworm.com/index.php?rid=171156855&cid=c_409_32_f&fid=37511&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpubmed%2F26993587%3Fdopt%3DAbstract
[Metastasis revealing malignant peritoneum mesothelioma: About the difficulty to identify the primary tumors].
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