Low grade fibromyxoid sarcoma: Fine-needle aspiration cytology with histologic, cytogenetic, immunohistochemical, and ultrastructural correlation

Guy M. Lindberg, Anirban Maitra, S. Tunc Gokaslan, M. Hossein Saboorian, Jorge Albores-Saavedra

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

BACKGROUND. Although the histologic features of the recently described low grade fibromyxoid sarcoma are well established, to the authors' knowledge there are no reports in the literature describing the cytologic features of this tumor by fine-needle aspiration. Recognition of this lesion is important because of its indolent but metastasizing nature. METHODS. The authors retrospectively reviewed their surgical pathology files for cases of low grade fibromyxoid sarcoma with a preoperative fine-needle aspiration biopsy (FNAB); three such cases were found. Immunohistochemical studies were performed in all three tumors, ultrastructural examination was performed in two tumors, and fresh tissue for cytogenetic analysis was obtained in one tumor. RESULTS. All FNABs showed similar features. The aspirates were relatively hypocellular with an abundant myxoid background; the neoplastic cells contained oval to spindle shaped nuclei with minimal pleomorphism. No capillaries or areas of fibrous tissue were identified. Cytogenetic study of one case revealed no chromosomal abnormalities. The histologic findings were characteristic for this lesion. By immunohistochemistry the tumor cells showed diffuse and strong reactivity for vimentin only; at the ultrastructural level the neoplastic spindle cells had characteristics of fibroblasts. CONCLUSIONS. The cytologic features of low grade fibromyxoid sarcoma are not specific enough for a definitive diagnosis based on FNAB alone; however, correlating the cytologic and clinical findings can narrow the range of diagnosis. The differential diagnosis includes other myxoid lesions, in particular superficial or intramuscular myxoma and myxofibrosarcoma. In addition, the immunohistochemical and ultrastructural findings support a fibroblastic origin for this neoplasm.

Original languageEnglish (US)
Pages (from-to)75-82
Number of pages8
JournalCancer
Volume87
Issue number2
DOIs
StatePublished - Apr 25 1999

Keywords

  • Cytogenetics
  • Cytology
  • Fibrobla st
  • Fine needle aspiration
  • Histology
  • Immunohistochemistry
  • Low grade fibromyxoid sarcoma
  • Ultrastructure

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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