Mesothelial Neoplasms

M-905 denotes tumors derived from mesothelial cells that line serous cavities such as the pleura, peritoneum and pericardium. The category includes both benign and malignant forms, most notably malignant mesothelioma and its variants, as well as well-differentiated papillary mesothelioma. These neoplasms are characterized by their origin in the protective mesothelial lining.