PMC4845405_01
A swelling in correspondence in the area of left medial malleolus.
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F1
On physical evaluation, tenderness was present on left medial malleolus with a firm 3x3 cm localized swelling (Fig. 1) and normal temperature of the overlying skin.
Radiograph of the patient's left ankle: A. Lateral view; B. Anteroposterior view showing well defined lytic lesion, in the left medial malleolus.
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F2
Skiagrams of the left ankle with lateral (Fig. 2A) and anteroposterior (Fig. 2B) views were done.
MRI of the patient's left ankle: A Coronal section and B. Transverse section showing benign cystic lesion in medial malleolus without bony expansion, cortical breech, extension into the joint/surrounding soft tissue, more likely, Chondroblastoma.
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F3
MRI (Figs. 3A and 3B) (Figs. 3A and 3B) showed intramedullary lobulated cystic lesion in the medial malleolus which was sub-articular without the involvement of articular surface of tibia.
Photomicrograph of the lesion showing polygonal cells closely packed in sheets with rounded nuclei and abundant acidophilic cytoplasm with scattered giant cells and scanty chondroid matrix.
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F4
Core biopsy with Jamshedi needle was performed, which showed (Figs. 4A&B) numerous polygonal cells closely packed in sheets with rounded nuclei and abundant acidophilic cytoplasm.