Surgery Today

, Volume 36, Issue 11, pp 994–996

Primary Stromal Tumor of the Omentum: Report of a Case

  • Banu Dogan Gun
  • Mustafa Ozkan Gun
  • Ziya Karamanoglu

DOI: 10.1007/s00595-004-3280-9

Cite this article as:
Gun, B., Gun, M. & Karamanoglu, Z. Surg Today (2006) 36: 994. doi:10.1007/s00595-004-3280-9


We report the case of a primary extragastrointestinal stromal tumor (EGIST) found in the omentum of a 65-year-old woman. The resected specimen, which measured 6 cm at its largest point, consisted of an outer solid part and inner uniloculated cysts. Microscopically, the tumor was characterized by interlacing bundles of elongated spindle cells, with the nuclei showing a focal palisading pattern; however, skenoid fibers were not observed anywhere and mitoses were absent. Immunohistochemically, the tumor was negative for smooth-muscle actin, desmin, and S-100 protein, but it was positive for CD117 and CD34. The microscopic features were consistent with a gastrointestinal stromal tumor.

Key words

Stromal tumorOmentumImmunohistochemistry

Copyright information

© Springer-Verlag Tokyo 2006

Authors and Affiliations

  • Banu Dogan Gun
    • 1
  • Mustafa Ozkan Gun
    • 2
  • Ziya Karamanoglu
    • 3
  1. 1.Department of Pathology, Faculty of MedicineZonguldak Karaelmas UniversityZonguldakTurkey
  2. 2.Department of PathologyZonguldak SSK City HospitalZonguldakTurkey
  3. 3.Department of General SurgeryZonguldak SSK City HospitalZonguldakTurkey