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Plantar view of a patient’s right foot, revealing the effects of "crab yaws" (2)

Note the soft, tumor-like masses on the sole of his foot, which when both feet are affected, cause the patient to walk in a characteristic but odd fashion, on the sides of his feet, hence the nickname "crab yaws". (Source: Photography by Susan Lindsley, Centers for Disease Control and Prevention, 1978. Public Health Image Library [PHIL] ID# 3830, Centers for Disease Control and Prevention, Atlanta, Georgia. Public domain.)

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