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| IMAGE QUIZ ARCHIVE | ||||||
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Image Quiz Pain, Swelling, and a Metatarsal Lesion1 | ||||||||||
| A fifty-six-year-old woman presented with progressive pain and swelling in the dorsolateral region of the right foot. She had had the symptoms for eight months. She could recall no history of trauma. Physical examination showed a healthy patient with a tender mass on the dorsolateral aspect of the right foot. The overlying skin was intact. She had a normal white-blood-cell count, a normal C-reactive protein level, and an erythrocyte sedimentation rate of 55 mm/hr. | ||||||||||
 Fig. 1 | A radiograph of the right foot showed an eccentric lytic lesion of the cortex and the medullary space in the diaphysis of the fifth metatarsal (Fig. 1). For larger view click on image | |||||||||
| Magnetic resonance images confirmed a destructive lesion of the fifth metatarsal with a dorsomedial cortical defect (Figs. 2-A, 2-B, and 2-C. | ||||||||||
| For larger view click on image | ||||||||||
 Fig. 2-A |
 Fig. 2-B |
 Fig. 2-C | ||||||||
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What is the diagnosis? | ||||||||||
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