图 3. 患者手掌、脚掌、肘部、膝盖皮肤过度角化、皲裂、脱屑，呈鱼鳞状.

Fig 3 Bilaterally symmetrical hyperkeratotic plaques over hands and feet which have involved dorsal aspects of hands, feet, elbow and knee skin

A：手掌；B：脚掌；C：肘部；D：膝盖。