Endomyocardial fibrosis (EMF) is a disease of unknown origin. It was f
irst described by Davies in Uganda in 1948. The clinical, echocardiogr
aphic, and hemodynamic findings in 18 patients are presented. Six pati
ents had right-sided involvement, four had left-sided involvement and
eight had biventricular involvement. The presence of a small ventricle
with obliteration of the apex and a large atrium, diagnosed by two-di
mensional echocardiography, is highly suggestive of endomyocardial fib
rosis. Ventricular angiography was diagnostic in 17 out of 18 cases. E
ndomyocardial biopsy yielded positive findings in three out of seven p
atients and is not essential for diagnosis. Two patients suffered a ce
rebral embolism. Six patients underwent surgery with good results in t
hree patients.