On CT, they usually appear as well-circumscribed homogenously enhancing masses, which demonstrate high signal on T2-weighted imaging (Fig. 13).
Signals from all 3 viruses were clearly detected and resolved in the mass spectra, which demonstrated that coinfections of >1 CoV species could be identified.
The immunoblot and peptide mass spectrometry data, which demonstrated that the PEG11 protein was full length, suggested that the aspartyl protease domain was either inactive or did not have autolytic activity.
We extended these observations with a mass spectrometry analysis, which demonstrated citrullination of seven out of 18 Arg residues all of which were internal.
Open image in new window Fig. 3 A 94-year-old man with a mass suspected on standard CT underwent MBCT, which demonstrated a mass in the third part of the duodenum and luminal narrowing (a).
On computed tomography, intramuscular myxoma is a well-defined homogenous lesion, an appearance similar to that of a cyst or low-density mass within muscles at which demonstrated low attenuation [20].
These results were confirmed using data from mass spectrometric analyses of the peptide maps, which demonstrated that the masses for each of the peptides generated by the GluC-digest were identical in the EP2006 and originator samples.
An emergent head CT was then obtained which demonstrated an enlarging mass in the sella without evidence of intra- or extra-lesional hemorrhage.
Transthoracic echocardiogram (echo) was done due to clinical stigmata suspicious for IE, which demonstrated a mobile mass on the posterior mitral leaflet (0.7 cm × 0.5 cm) and a small atrial septal defect (ASD)/patent foramen ovale (PFO).
