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Case Report Open Access

Giant dedifferentiated liposarcoma of the neck with osteosarcoma and chondrosarcoma components: A case report

  • Authors:
    • Jiankang Zeng
    • Rong Gao
    • Kai Yang
    • Jiahuan Li
    • Fei Tan
    • Peijie Li
    • Xin Wang
    • Jin Wang
    • Yongjie Qiao
    • Shenghu Zhou
  • View Affiliations / Copyright

    Affiliations: Department of Joint Surgery, The 940th Hospital of Joint Logistic Support Force of Chinese People's Liberation Army, Lanzhou, Gansu 730050, P.R. China, Department of The First Clinical Medical College, Gansu University of Traditional Chinese Medicine, Lanzhou, Gansu 730050, P.R. China
    Copyright: © Zeng et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 29
    |
    Published online on: January 24, 2025
       https://doi.org/10.3892/mco.2025.2824
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Abstract

Dedifferentiated liposarcoma (DDLPS) is a subtype of LPS characterized by two distinct levels of differentiation and morphological structures, comprising areas of well‑differentiated LPS and dedifferentiated, non‑lipogenic, highly malignant components. DDLPS most frequently occurs in the retroperitoneum and the soft tissues of the pelvis and limbs, and is rare in the head and neck region, accounting for only 1% of head and neck sarcomas. The present study describes the case of a 72‑year‑old male with a 30‑year history of left upper limb numbness and heaviness. During physical examination, a tumor measuring ~13x22 cm was discovered in the left posterior region of the head and neck. The mass was hard in texture and had limited mobility. A biopsy of the lesion revealed a mesenchymal tumor rich in adipose components with ossification, containing heterologous elements primarily indicative of osteosarcoma, highly suggestive of DDLPS. A radical excision of the tumor was subsequently performed. The surgical specimen exhibits cross‑sections with a gray‑white to gray‑yellow solid consistency, featuring gray‑white, semi‑transparent areas resembling cartilage. Immunohistochemical staining was positive for murine double minute 2 (MDM2), cyclin‑dependent kinase 4 (CDK4), P16, P53, Vimentin and Ki‑67, and negative for cytokeratin pan, S‑100, CD34 and smooth muscle actin. Fluorescence in situ hybridization results indicated amplification of the MDM2 and CDK4 genes. In the present study, a case of a large DDLPS in the neck with components of osteosarcoma and chondrosarcoma was reported. There was no recurrence during the follow‑up period. The pathological characteristics, diagnosis and current treatment methods for DDLPS were also described. Although cases of DDLPS have been reported, the number of cases described at this site remains limited to date, and it is currently not possible to accurately predict the treatment efficacy and prognosis.
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Copy and paste a formatted citation
Spandidos Publications style
Zeng J, Gao R, Yang K, Li J, Tan F, Li P, Wang X, Wang J, Qiao Y, Zhou S, Zhou S, et al: Giant dedifferentiated liposarcoma of the neck with osteosarcoma and chondrosarcoma components: A case report. Mol Clin Oncol 22: 29, 2025.
APA
Zeng, J., Gao, R., Yang, K., Li, J., Tan, F., Li, P. ... Zhou, S. (2025). Giant dedifferentiated liposarcoma of the neck with osteosarcoma and chondrosarcoma components: A case report. Molecular and Clinical Oncology, 22, 29. https://doi.org/10.3892/mco.2025.2824
MLA
Zeng, J., Gao, R., Yang, K., Li, J., Tan, F., Li, P., Wang, X., Wang, J., Qiao, Y., Zhou, S."Giant dedifferentiated liposarcoma of the neck with osteosarcoma and chondrosarcoma components: A case report". Molecular and Clinical Oncology 22.3 (2025): 29.
Chicago
Zeng, J., Gao, R., Yang, K., Li, J., Tan, F., Li, P., Wang, X., Wang, J., Qiao, Y., Zhou, S."Giant dedifferentiated liposarcoma of the neck with osteosarcoma and chondrosarcoma components: A case report". Molecular and Clinical Oncology 22, no. 3 (2025): 29. https://doi.org/10.3892/mco.2025.2824
Copy and paste a formatted citation
x
Spandidos Publications style
Zeng J, Gao R, Yang K, Li J, Tan F, Li P, Wang X, Wang J, Qiao Y, Zhou S, Zhou S, et al: Giant dedifferentiated liposarcoma of the neck with osteosarcoma and chondrosarcoma components: A case report. Mol Clin Oncol 22: 29, 2025.
APA
Zeng, J., Gao, R., Yang, K., Li, J., Tan, F., Li, P. ... Zhou, S. (2025). Giant dedifferentiated liposarcoma of the neck with osteosarcoma and chondrosarcoma components: A case report. Molecular and Clinical Oncology, 22, 29. https://doi.org/10.3892/mco.2025.2824
MLA
Zeng, J., Gao, R., Yang, K., Li, J., Tan, F., Li, P., Wang, X., Wang, J., Qiao, Y., Zhou, S."Giant dedifferentiated liposarcoma of the neck with osteosarcoma and chondrosarcoma components: A case report". Molecular and Clinical Oncology 22.3 (2025): 29.
Chicago
Zeng, J., Gao, R., Yang, K., Li, J., Tan, F., Li, P., Wang, X., Wang, J., Qiao, Y., Zhou, S."Giant dedifferentiated liposarcoma of the neck with osteosarcoma and chondrosarcoma components: A case report". Molecular and Clinical Oncology 22, no. 3 (2025): 29. https://doi.org/10.3892/mco.2025.2824
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