Wednesday, February 15, 2006

Radiology Wednesday

This was submitted by D Arenberg:
This is a contrast chest CT. What's the differential diagnosis?

3 comments - CLICK HERE to read & add your own!:

Baleeiro said...

OK, I guess I will be the first to stick my neck out...
There seems to be an extra density between the aorta and the PA. It is opacified so it looks like a vascular structure but it doesn't seem to be continuous with the PA itself.

Arenberg said...

Alright...since there are no takers on this one, I'll point out what this is and why I thought it was interesting.

The mass in the AP window is enhancing with contrast, suggesting that it is highly vascular. As an enhancing mediastinal mass, it has a high likelihood of being a neurogenic tumor. On biopsy it was a paraganglioma, which is basically an extra-adrenal pheochromocytoma. In this particular case, it was not known to be catecholamine producing.

Most of these are in the posterior mediastinum.

Anonymous said...

mpa aneurysm?