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  Indian J Med Microbiol
 

Figure 1: (a) Typical pigmented callosity on the lateral malleolus. (Yoga Sign). (b) Lichen planus hypertrophicus developing over a long-standing callosity

Figure 1: (a) Typical pigmented callosity on the lateral malleolus. (Yoga Sign). (b) Lichen planus hypertrophicus developing over a long-standing callosity