1. Well-Differentiated Papillary Mesothelioma
Am J Surg Pathol Oct;25(10):
Unusual variant of epithelial mesothelioma
≠ malignant mesothelioma
Low malignant potential
14 cases of WDPM

2. Well-Differentiated Papillary Mesothelioma
Am J Surg Pathol Oct;25(10):
Asbestos exposure: ±
Radiologic findings
Peritoneum: ascites ± bowel wall/mesentery thickening
Pleura: unilateral free-flowing pleural effusion ± nodular pleural thickening
Prognosis
9 complete follow-up
Six: indolent disease
One: resolution after chemotherapy
One: aggressive course
One died of other causes

3. Well-Differentiated Papillary Mesothelioma
Am J Surg Pathol Oct;25(10):
Pathologic findings
Gross description: variable - multifocal (some cases), finding granular deposits, single fungating masses
Microscopic findings: single layer of relatively uniform cuboidal mesothelial cells covered thin fibrovascular papillary cores