History

A 53-year-old female presented to the emergency room with a few-weeks’ duration of pain and swelling of the lateral aspect of the right foot. She had no history of trauma or recent infections.

Below are the images. Figure 1 Coronal plane; Fig. 2 Sagittal plane; Fig. 3 Axial plane

Fig. 1
figure 1

Coronal and coronal STIR right foot view

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Fig. 2
figure 2

Sagittal right foot view

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Fig. 3
figure 3

Axial right foot view

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What is the diagnosis?