Magnetic resonance imaging of infiltrating angiolipoma of the neck.

Although infiltrating angiolipomas are histologically benign, recurrence has been reported in more than 50% of patients after partial extirpation. The authors have treated a 14-year-old female with a large infiltrating angiolipoma of the neck, in whom magnetic resonance imaging was more valuable than x-ray computed tomography and angiography in delineating the extent of the tumor. Total removal of the tumor was performed with the aid of an operating microscope. To our knowledge, this is the first description of the magnetic resonance imaging of an infiltrating angiolipoma. When other neuroradiologic examinations cannot be considered to demonstrate the extent of the tumor accurately, magnetic resonance imaging may be recommended.