title: Fibromatosis of the mesoappendix.
abstract: Mesenchymal tumors of the appendix are very rare. Mesenteric fibromatosis is the most common diagnosis in the case of isolated proliferative fibroblastic lesion found in this region. However, the differential diagnosis between fibromatosis and well-differentiated fibrosarcoma (Grade I) can be difficult in some borderline cases. A rare case of proliferative fibroblastic lesion involving the appendix and mesoappendix is presented, and its origin, diagnosis and differential diagnosis are discussed.
authors.affiliation: Departments of Pathology,Internal Medicine andSurgery, Tohoku Rosai Hospital, Sendai, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Pilichowska
authors.forename: N
authors.initials: N
authors.lastname: Kimura
authors.forename: H
authors.initials: H
authors.lastname: Yamazaki
authors.forename: A
authors.initials: A
authors.lastname: Ohuchi
authors.forename: K
authors.initials: K
authors.lastname: Yamamoto
mesh_terms: D000328:Adult; D001063:Appendiceal Neoplasms / Q000378:metabolism / Q000473:pathology*; D001065:Appendix / Q000737:chemistry / Q000473:pathology*; D005350:Fibroma / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D019394:Ki-67 Antigen / Q000032:analysis; D008297:Male; D008940:Mitotic Index; D014746:Vimentin / Q000032:analysis
chemical_list: D019394:Ki-67 Antigen; D014746:Vimentin