title: Benign mesothelial proliferation with collagen formation in pericardial fluid.
mesh_terms: D000293:Adolescent; D003094:Collagen; D003581:Cytodiagnosis; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008654:Mesothelioma / Q000473:pathology* / Q000648:ultrastructure; D010490:Pericardial Effusion / Q000166:cytology*
chemical_list: D003094:Collagen