This CT slice is from a middle aged lady who had endomyocardial fibrosis of the acute sort, showing a thick eosinophilic cellular reaction on the endocardial surface of the right ventricle. This tumour-like process was causing severe right ventricular outflow tract obstruction. This is evident in this Video clip which is an MR scan of the right ventricle in the coronal plane. The video contains an unusual feature which at first we failed to notice. Have a look at it before you go to the next page.