Ga-67 Imaging of ???Cervical Collar??? Sign in Periarteritis Nodosa

A 30-month-old girl was evaluated with Ga-67 imaging to identify foci of abnormal inflammation. Biopsy of a cutaneous lesion demonstrated manifestations of periarteritis nodosa, which included polymorphic exanthemata-purpuric, urticarial, and multiform in character. There was also severe subcutaneous hemorrhage resulting from necrotizing arteritis. Ga-67 imaging shows the only abnormality located to the posterior neck muscles at sites of cutaneous involvement. Other areas were normal