Eumycetoma Osteomyelitis of the Calcaneus in a Child: A Radiologic-Pathologic Correlation following Total Calcanectomy

Figure 1

(a) T1-weighted sagittal MRI of the right foot. Note the altered marrow signals seen almost totally replacing the marrow texture of the calcaneus and to a lesser extent the opposing posteromedial aspect of the talus (black arrow) eliciting an abnormal low signal. (b) T2-weighted sagittal MRI of the right foot. Note the abnormal high signals replacing the marrow texture of the calcaneus. Note the multiple low-intensity lesions (black arrows) that may represent a conglomerate of grains in the background of diffuse high-intensity inflammatory bone changes. These low-intensity lesions are known as dot in circle. (c) T2-weighted sagittal MRI of the right foot. Note the low-intensity cavitary lesion of the posterior calcaneus (white arrow) that was found to correlate well to a conglomerate of black grains noticed in the gross pathologic specimen of the calcaneus. Note the same low-intensity lesion (black arrow) in the background of diffuse hyperintense inflammatory soft tissue changes (dot in circle). (d) T2-weighted coronal MRI of the right foot. Note the multiple small low-intensity lesions (black arrows) that may represent a conglomerate of grains in the background of diffuse hyperintense inflammatory bone changes. The same lesion is depicted in the soft tissue (white arrow).

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