Jorge Elias Jr MD, PhD, Presenter: Nothing to Disclose

Valdair Francisco Muglia MD, PhD, Abstract Co-Author: Nothing to Disclose

Silvio Tucci MD, PhD, Abstract Co-Author: Nothing to Disclose

Marcel Koenigkam Santos MD, Abstract Co-Author: Nothing to Disclose

Henrique S Trad MD, Abstract Co-Author: Nothing to Disclose

Catherine Yang MD, Abstract Co-Author: Nothing to Disclose

Paula C.L. Elias, Abstract Co-Author: Nothing to Disclose

Sara R. Teixeira MD, Abstract Co-Author: Nothing to Disclose

Margareth Castro MD, PhD, Abstract Co-Author: Nothing to Disclose

Airton Custodio Moreira MD, PhD, Abstract Co-Author: Nothing to Disclose

00030490-DMT et al, Abstract Co-Author: Nothing to Disclose

1. to discuss the spectrum of adrenal lesions that have marked increased signal on T2-weighted images. 2. To review the MRI findings of pheochromocytomas and from the others high signal lesions that improve lesion characterization. 3. To review the adrenal MR imaging arsenal with emphasis on recently incorporated techniques.

1. Discuss the MRI protocols used in adrenal imaging, including morphologic series, Chemical Shift and Dynamic Contrast-enhanced images and the value of Diffusion-Weighted sequences. 2. To review the most common MRI appearance of pheochromocitoma, including classical “bulb light” sign and others less known appearances. To present a series of lesions that mimics pheocromocitomas, including hemangiomas, hematomas, metastases and cysts, emphasizing critical points for differential diagnosis.

The main teaching points are: 1. High signal lesions on adrenal glands are not specific for pheochromocitoma. 2. The MR imaging arsenal should be used at full extension for better lesion characterization.  

Elias Jr, J, Muglia, V, Tucci, S, Santos, M, Trad, H, Yang, C, Elias, P, Teixeira, S, Castro, M, Moreira, A, et al, 0, Adrenal "Light Bulb Sign": Beyond Incidental Pheos.  Radiological Society of North America 2009 Scientific Assembly and Annual Meeting, November 29 - December 4, 2009 ,Chicago IL. http://archive.rsna.org/2009/8013760.html