Usefulness of PET/CT for diagnosis of periosteal chondrosarcoma of the femur: A case report

  • Authors:
    • Shota Morimoto
    • Hiroyuki Futani
    • Konan Tsuchiyama
    • Satoru Fukunaga
    • Yoshitane Tsukamoto
    • Shinichi Yoshiya
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  • Published online on: March 28, 2014     https://doi.org/10.3892/ol.2014.2010
  • Pages: 1826-1828
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Abstract

Periosteal chondrosarcoma is an extremely rare low‑grade malignant cartilaginous tumor arising from the external bone surface. Diagnosis of periosteal chondrosarcomas may be challenging, since this condition closely resembles periosteal chondromas. It has been reported that positron emission tomography (PET) is useful in distinguishing benign from malignant cartilaginous tumors using a maximum standardized uptake value (SUVmax) cut‑off of 2.0 or 2.3. This report presents the case of a 40‑year‑old female with an 18‑month history of a tender mass in the left distal femur. Radiological findings demonstrated periosteal buttressing. Magnetic resonance imaging (MRI) revealed a chondrogenic tumor of 3 cm in size developing from the external bone surface. It was difficult to differentiate periosteal chondrosarcoma from periosteal chondroma on the basis of size and the radiological and MRI findings. PET/computed tomography (CT) revealed abnormal linear uptake with an SUVmax of 2.7, indicating a malignant tumor. A diagnosis of periosteal chondrosarcoma was made, and wide resection was performed. Tumor histology was consistent with grade II chondrosarcoma. PET/CT is thus useful in differentiating periosteal chondrosarcoma from periosteal chondroma.
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June-2014
Volume 7 Issue 6

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Morimoto S, Futani H, Tsuchiyama K, Fukunaga S, Tsukamoto Y and Yoshiya S: Usefulness of PET/CT for diagnosis of periosteal chondrosarcoma of the femur: A case report. Oncol Lett 7: 1826-1828, 2014
APA
Morimoto, S., Futani, H., Tsuchiyama, K., Fukunaga, S., Tsukamoto, Y., & Yoshiya, S. (2014). Usefulness of PET/CT for diagnosis of periosteal chondrosarcoma of the femur: A case report. Oncology Letters, 7, 1826-1828. https://doi.org/10.3892/ol.2014.2010
MLA
Morimoto, S., Futani, H., Tsuchiyama, K., Fukunaga, S., Tsukamoto, Y., Yoshiya, S."Usefulness of PET/CT for diagnosis of periosteal chondrosarcoma of the femur: A case report". Oncology Letters 7.6 (2014): 1826-1828.
Chicago
Morimoto, S., Futani, H., Tsuchiyama, K., Fukunaga, S., Tsukamoto, Y., Yoshiya, S."Usefulness of PET/CT for diagnosis of periosteal chondrosarcoma of the femur: A case report". Oncology Letters 7, no. 6 (2014): 1826-1828. https://doi.org/10.3892/ol.2014.2010