Desmoplastic trichoepithelioma with overlying pseudoepitheliomatous hyperplasia mimicking squamous cell carcinoma in a pediatric patient.

and postcardiac rhythm strips; and advanced cardiovascular life support–certified surgical personnel. Although MMS resulted in no adverse effects, our patient was not pacemaker dependent. Approximately 5% to 10% of patients with implanted cardiac pacemakers are dependent on their devices for maintaining adequate heart rhythm. Electromagnetic interference in a pacemaker-dependent patient is potentially life threatening, whereas in a nondependent patient, it is likely that pacemaker malfunction would result in less-acute consequences.