“…The most commonly affected bones are the clavicle and the sternum, but manifestations can also be seen on long tubular and tarsal bones, as well as the spine and ribs [2,3,8,9]. Involvement of the mandible has also been described in approximately 10% of cases [2,4,9,11]. However, as the bone and skin lesions, like palmoplantar pustulosis, do not necessarily emerge at the same time, making an appropriate diagnosis of the syndrome can be difficult and challenging [9,12].…”