Low Grade Chondrosarcoma Presenting as Progressive Valgus Limb Deformity in a Growing Period

Hyun Guy Kang; Weon Seo Park; Seog Yun Park

doi:10.5292/jkbjts.2014.20.1.41

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Kang, Park, and Park: Low Grade Chondrosarcoma Presenting as Progressive Valgus Limb Deformity in a Growing Period

Case Report

J Korean Bone Joint Tumor Soc 2014;20(1):41-45.

Published online: 10 June 2014

DOI: https://doi.org/10.5292/jkbjts.2014.20.1.41

Low Grade Chondrosarcoma Presenting as Progressive Valgus Limb Deformity in a Growing Period

Hyun Guy Kang, Weon Seo Park^*, Seog Yun Park^*

Orthopaedic Oncology Clinic, Goyang, Korea

^*Department of Pathology, National Cancer Center, Goyang, Korea

Correspondence to: Hyun Guy Kang Orthopaedic Oncology Clinic, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang 410-769, Korea TEL: +82-31-920-1665 FAX: +82-31-920-2798 E-mail: ostumor@ncc.re.kr

Received 1 April 2014 Revised 27 May 2014 Accepted 5 June 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A femoral bone tumor causing a valgus deformity by affecting the growth plate was found. Long intramedullary diaphyseal tumor was separated by septum at the metapysis. Low grade chondrosarcoma was confirmed diagnosed by pathologists. Progressive limb deformity can be a sign of bone tumor in growing period.

Keywords: valgus limb deformity, low grade chondrosarcoma, growing period

References

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Figure 1.

A 15-year-old man has progressive valgus deformity of left lower limb. (A) Photograph shows valgus deformed lower limb. (B) Radiograph demonstrate 27 degree valgus deformed femur at the meta-diaphysis area.

Figure 2.

(A) T1-weighted coronal images show the meta-diaphysial intramedullary and intracortical lesion. (B) Coronal computed tomography obtained after open biopsy showing valgus curved femur may caused close connecting growth plate of the intracortical lesion (arrow). (C) Axial computed tomography sections showing the intramedullary calcific stippling (superior), distinguished intracortical osteolytic lesion (middle), and elliptical tailed of lateral intracortical lesion toward growth plate (inferior).

Figure 3.

(A) and (B) Coronal MRI showed mountain peak shape of the lateral growth plate to the distal tail of the intracortical lesion.

Figure 4.

(A) The photograph of coronal cut specimen reveal the distinguished intramedullary and intracortical lesion. (B) Photomicrograph of intramedullary and (C) intracortical lesion showing a low grade chondrosarcoma with intrusion of surrounding mature lamellar bone, (Hematoxylin and eosin, ×100). (D) The obvious atypia of chondrocytes was not revealed on the high-magnification photomicrograph (Hematoxylin and eosin, ×400).

Figure 5.

Post operative six-year follow up (A) both knee anteroposterior radiograph shows the epiphysiodesis around right knee and different knee joint level by shortening of left femur. (B) Left femur anteroposterior radiograph demonstrates well incorporation of allograft and intramedullary loaded autogenous fibular graft with correction of deformity.

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