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Case Report Open Access

Detailed analysis of a superficial CD34‑positive fibroblastic tumor: A case report and review of the literature

  • Authors:
    • Kensaku Yamaga
    • Akihiro Fujita
    • Mari Osaki
    • Satoshi Kuwamoto
    • Naoko Ishiguro
    • Tadahito Yamamoto
    • Hideki Nagashima
  • View Affiliations / Copyright

    Affiliations: Department of Orthopedic Surgery, Faculty of Medicine, Tottori University, Yonago, Tottori 683-8504, Japan, Department of Pathology, Tottori University Hospital, Yonago, Tottori 683‑8504, Japan, Department of Pathobiological Science and Technology, Faculty of Medicine, Tottori University, Yonago, Tottori 683-8503, Japan, Department of Orthopedic Surgery, Matsue City Hospital, Matsue, Shimane 690‑0045, Japan
    Copyright: © Yamaga et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 3395-3400
    |
    Published online on: July 20, 2017
       https://doi.org/10.3892/ol.2017.6636
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Abstract

Superficial cluster of differentiation (CD)34‑positive fibroblastic tumor (SCPFT) is a rare mesenchymal neoplasm of borderline malignancy. It is characterized by a superficial location, marked cellular pleomorphism, an extremely low incidence of mitotic figures, and strong CD34 immunohistochemical positivity. As SCPFT is a recently described neoplasm, its characteristics are yet to be fully elucidated. To the best of our knowledge, no detailed studies regarding the imaging findings and cytogenetic analyses of SCPFTs exist. The present study describes a typical case of an 18‑year‑old man who developed an SCPFT measuring 87x70x80 mm in the subcutaneous adipose tissue of his right thigh. Computed tomography (CT) revealed a well‑marginated tumor without calcification, and the enhancement on CT was weak. The tumor demonstrated abnormal uptake on 2‑(18F) fluoro‑2‑deoxy‑D‑glucose positron emission tomography (PET), with a maximum standardized uptake value of 2.57. Magnetic resonance imaging (MRI) revealed a clearly defined tumor that exhibited homogeneous low signal intensity on T1‑weighted imaging and high signal intensity on T2‑weighted imaging, with small lobulated structures. Histopathologically, the tumor was composed of irregular spindle‑to‑oval‑shaped cells with eosinophilic glassy cytoplasm and hyperchromatic, bizarre and pleomorphic nuclei that frequently exhibited intranuclear pseudoinclusions. Immunohistochemically, the tumor cells were diffusely and strongly positive for CD34. The Mindbomb E3 ubiquitin protein ligase 1 labeling index was 8.6%. Ultrastructurally, the tumor cells exhibited irregular or convoluted nuclei with abundant euchromatin‑prominent nucleoli. The cytoplasmic organelles consisted of scattered, abundant rough endoplasmic reticulum, mitochondria, lysosomes, ribosomal rosettes and aggregated lipid globules. Of 18 metaphase cells identified, 2 demonstrated translocation between chromosomes 2 and 5 in cytogenetic studies. To the best of our knowledge, this is the first study describing imaging data (CT, MRI and PET‑CT) and chromosomal aberrations for SCPFT.
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Copy and paste a formatted citation
Spandidos Publications style
Yamaga K, Fujita A, Osaki M, Kuwamoto S, Ishiguro N, Yamamoto T and Nagashima H: Detailed analysis of a superficial CD34‑positive fibroblastic tumor: A case report and review of the literature. Oncol Lett 14: 3395-3400, 2017.
APA
Yamaga, K., Fujita, A., Osaki, M., Kuwamoto, S., Ishiguro, N., Yamamoto, T., & Nagashima, H. (2017). Detailed analysis of a superficial CD34‑positive fibroblastic tumor: A case report and review of the literature. Oncology Letters, 14, 3395-3400. https://doi.org/10.3892/ol.2017.6636
MLA
Yamaga, K., Fujita, A., Osaki, M., Kuwamoto, S., Ishiguro, N., Yamamoto, T., Nagashima, H."Detailed analysis of a superficial CD34‑positive fibroblastic tumor: A case report and review of the literature". Oncology Letters 14.3 (2017): 3395-3400.
Chicago
Yamaga, K., Fujita, A., Osaki, M., Kuwamoto, S., Ishiguro, N., Yamamoto, T., Nagashima, H."Detailed analysis of a superficial CD34‑positive fibroblastic tumor: A case report and review of the literature". Oncology Letters 14, no. 3 (2017): 3395-3400. https://doi.org/10.3892/ol.2017.6636
Copy and paste a formatted citation
x
Spandidos Publications style
Yamaga K, Fujita A, Osaki M, Kuwamoto S, Ishiguro N, Yamamoto T and Nagashima H: Detailed analysis of a superficial CD34‑positive fibroblastic tumor: A case report and review of the literature. Oncol Lett 14: 3395-3400, 2017.
APA
Yamaga, K., Fujita, A., Osaki, M., Kuwamoto, S., Ishiguro, N., Yamamoto, T., & Nagashima, H. (2017). Detailed analysis of a superficial CD34‑positive fibroblastic tumor: A case report and review of the literature. Oncology Letters, 14, 3395-3400. https://doi.org/10.3892/ol.2017.6636
MLA
Yamaga, K., Fujita, A., Osaki, M., Kuwamoto, S., Ishiguro, N., Yamamoto, T., Nagashima, H."Detailed analysis of a superficial CD34‑positive fibroblastic tumor: A case report and review of the literature". Oncology Letters 14.3 (2017): 3395-3400.
Chicago
Yamaga, K., Fujita, A., Osaki, M., Kuwamoto, S., Ishiguro, N., Yamamoto, T., Nagashima, H."Detailed analysis of a superficial CD34‑positive fibroblastic tumor: A case report and review of the literature". Oncology Letters 14, no. 3 (2017): 3395-3400. https://doi.org/10.3892/ol.2017.6636
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