[Endocardial fibrosis in neuroendocrine tumors of the gastroenteropancreatic system].

Clinical characteristics, echocardiographic and Doppler echocardiographic findings, as well as serum levels of chromogranin A were recorded on 62 patients (27 women, 35 men; mean age 55 [11-83] years) with histologically confirmed tumours of the gastroenteropancreatic (GEP) system. Changes in the right heart were found in 14 patients (22%), club-like thickening of tricuspid leaflets in 13, tricuspid regurgitation in 14, stenosis in 2 and right atrial or right ventricular dilatation in 11 and 5, respectively. There was no difference between the patients with or without right-heart changes in regard to age, presence of carcinoid syndrome, duration of symptoms, primary tumour site, pattern of metastases, treatment or chromogranin A level. Two patients with nonfunctioning tumours had right-heart changes. While clinical and biochemical parameters did not identify patients with right-heart changes, echocardiography demonstrated all haemodynamically significant endocardial changes. Even patients with nonfunctioning GEP tumours should be regularly monitored by echocardiography.