Chronic<unk> ' disease leads to congestive heart failure. These patients commonly have right bundle branch block and/or other arrhythmias. These hearts are dilated and hypertrophied, have areas of fibrosis especially in the apex, and often contain mural thrombi. The myocardium is infiltrated with lymphocytes and macrophages and there is interstitial edema and fibrosis. This inflammatory reaction is most severe around the area of the right bundle branch. Patients may also develop megaesophagus and/or megacolon.
The heart in Chagas' disease
The heart in Wilson's disease
The heart in celiac disease
The heart in Grave's disease 
The heart in inflammatory bowel disease
The heart in sarcoidosis
The heart in Crohn's disease
The heart in Wegener's granulomatosis