J Korean Foot Ankle Soc.  2023 Dec;27(4):154-157. 10.14193/jkfas.2023.27.4.154.

Huge Chondroblastoma of the Talus: A Case Report

• Yoon SH
• Park Hw

• KMID: 2553009
• DOI: http://doi.org/10.14193/jkfas.2023.27.4.154

Abstract

Chondroblastoma is a rare benign cartilaginous neoplasm that accounts for 1% of bone tumors and is common in the epiphysis of the long bones. The condition is rarely found in the talus bone (4% of cases). This paper reports a 15-year-old male patient treated for a talus bone lesion discovered incidentally on imaging. Excisional biopsy, curettage, and an autobone and allobone graft were performed, with good results.

Keyword

Chondroblastoma; Talus; Bone graft; Curettage

Figure

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  Figure 1 Preoperative plain radiography. Multi-lobulated huge cystic lesion is found on the left talar body and neck.

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  Figure 2 Preoperative magnetic resonance imaging in the axial (A), sagittal (B) and coronal (C) plane images. Multi-lobulated huge cystic lesion is found on the left talar body and neck. Heterogeneous intensity in the cystic lesion and fluid-fluid level are found, these findings suggest secondary aneurysmal bone cyst change.

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  Figure 3 Intraoperative clinical photos. (A) Skin incision. (B) Curettage thru the opened cortex of anterolateral talar body area. (C) Removed mass lesion from the cavity. (D) Schematic drawing of the mass lesion on the sagittal and axial plane.

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  Figure 4 Specimen pathologic images. Hematoxylin and Eosin (H&E) stain preparation. Multinucleated giant cell with a chondroid matrix, surrounded by dystrophic calcification are revealed as ‘chicken wire appearance’. (A) Magnification ×200, (B) magnification ×400.

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  Figure 5 Postoperative plain radiography after 7 months from surgery. Radiopacity is increased in the cystic lesion in the lateral (A) and anteroposterior (B) views.

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  Figure 6 Postoperative three-dimensional computed tomography scan images after 7 months from surgery in the axial (A), sagittal (B) and coronal (C) plane images. The findings indicate that there is newly formed bone tissue within the cyst, and an increase in cortical bone thickness.

Reference

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