Multiple bone metastasis of sclerosing epithelioid fibrosarcoma 12 years after initial surgery-increasing Ki-67 labeling index

Masahito Hatori, Atsuko Kanno, Masami Hosaka, Koshi N. Kishimoto, Munenori Watanuki, Mika Watanabe, Eiji Itoi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Sclerosing epithelioid fibrosarcoma (SEF) is a rare sarcoma of low-grade malignancy. There has been no report to describe the comparison of histological features of SEF between primary and metastatic lesions in spite of high local recurrence rate. We report the histological changes and increasing Ki-67 labeling index of the primary and metastatic lesions of SEF. The patient was a 31-year-old man. At 18, a tumor in the abdominal wall was excised. At 23, the tumor recurred which was removed again. At 30, he was referred to our hospital because of swelling and pain in the chest. Histological examination of the chest wall tumor showed epithelioid cells arranged like alveolar pattern with dense collagen stroma. These findings were consistent with those of SEF. Abdominal and the rib tumors showed the same immunohistochemistrical expression. It is noteworthy that the tumor cells of the rib lesion showed increased cellularity, and its Ki-67 activity was higher as compared with the abdominal tumor, suggestive of progression of malignancy of SEF.

Original languageEnglish
Article number953750
JournalSarcoma
Volume2009
DOIs
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Oncology
  • Radiology Nuclear Medicine and imaging

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