Carcinoid tumors have been described in almost every organ and may aff
ect virtually every body system. Cardiac involvement manifesting as ri
ght-sided valvular disease is characteristic of the carcinoid syndrome
; however, direct myocardial involvement is unusual. We present a case
of an invasive carcinoid tumor whose primary manifestation was myocar
dial invasion. (C) 1997 Wiley-Liss, Inc.