title: [A well differentiated fibrosarcoma arising in left neck region].
abstract: The frequency of a fibrosarcoma, based on current criteria, is less than 10% of soft tissue sarcomas. It is most common in the region of extremities and the trunk and relatively rare in the head and neck region. Therefore, of interest is a case of a well differentiated fibrosarcoma arising in left neck region of a 69-year-old woman that is reported. The excised tumor consisted of a firm, partially lobulated mass with a fibrous capsule that measured 8 cm at its greatest diameter. Histologically, the tumor tissue was rather uniform and often had a fasciculated growth pattern consisting of spindle shaped cells and interwoven collagenous fiber in a parallel fashion. To achieve a diagnosis, it was necessary to differentiate this type of fibrosarcoma from aggressive fibromatosis and myogenic tumor (leiomyoma or leiomyosarcoma).
authors: Dept. of Pathology, Hiroshima City Asa Hospital.
authors: Y
authors: Y
authors: Hayashi
authors: T
authors: T
authors: Sumida
authors: H
authors: H
authors: Kitahira
authors: I
authors: I
authors: Baba
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D005350:Fibroma / Q000175:diagnosis; D005354:Fibrosarcoma / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D006258:Head and Neck Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007889:Leiomyoma / Q000175:diagnosis; D007890:Leiomyosarcoma / Q000175:diagnosis