label: Pleural Well Differentiated Papillary Mesothelial Tumor
label_lc: pleural well differentiated papillary mesothelial tumor
description: "A rare, non-invasive, localized or multifocal mesothelial neoplasm that arises from the pleura. It is characterized by the presence of papillae with myxoid fibrovascular cores, lined by a single layer of mesothelial cells.  The clinical course is usually indolent."