title: Extensive myxoid change in well-differentiated papillary mesothelioma of the pelvic peritoneum.
abstract: We present a unique case of papillary mesothelioma of the pelvic peritoneum with extensive myxoid change in a 44-year-old woman. The patient presented with lower abdominal pain; imaging studies revealed a pelvic mass. Microscopic examination of the surgically resected specimen showed extensive areas of myxoid stroma and only focal areas of classical papillary mesothelioma. A small biopsy of this lesion might have been misinterpreted as a soft tissue neoplasm with myxoid stroma or pseudomyxoma peritonei. It is suggested that mesothelioma with myxoid change should be included with differential diagnoses of myxoid lesions of the peritoneum.
authors.affiliation: Department of Pathology, Northwestern Memorial Hospital and Northwestern University Medical School, Chicago, IL, USA.
authors.forename: Leslie K
authors.initials: LK
authors.lastname: Diaz
authors.forename: Adaora
authors.initials: A
authors.lastname: Okonkwo
authors.forename: Enric P
authors.initials: EP
authors.lastname: Solans
authors.forename: Carlos
authors.initials: C
authors.lastname: Bedrossian
authors.forename: M Sambasiva
authors.initials: MS
authors.lastname: Rao
mesh_terms: D000328:Adult; D014408:Biomarkers, Tumor / Q000378:metabolism; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008654:Mesothelioma / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D009077:Mucins / Q000378:metabolism; D010534:Peritoneal Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D017154:Stromal Cells / Q000378:metabolism / Q000473:pathology; D016896:Treatment Outcome
chemical_list: D014408:Biomarkers, Tumor; D009077:Mucins