Lytic calcaneal lesion detected on radiograph.
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Well defined lesion is seen in Wards triangle of calcaneus with narrow zone of transition showing homogeneous fat signal intensity within getting suppressed on fat suppressed images. Central T1 and T2 signal loss seen suggestive of calcification typical of cockade sign
One of the most common benign lesions of calcaneum. Identified usually between 30 - 70 years of age. Remains asymptomatic in a good number of patients and most often does not require any treatment. In the absence of central calcification, the lesion can be easily missed on a busy working day and should always be looked out for in the calcaneum.
It is typically seen in Wards triangle, an area of lucency within the calcaneum in the region of base and neck wherein there is absence of trabecullae. When prominent, the lucency on radiographs can also appear as a pseudolesion.