[Primary leiomyosarcoma in the left atrium--a rarity. Case report and literature review].

The case presents a 61 year old woman which came into the hospital with left heart failure. After an unsuccessful trial to treat the heart failure in an habitual method the echocardiographic showed a mass lesion which had filled out mostly of the left atrium. Histological features demonstrated a leiomyosarcoma with an origin from the wall of the left atrium. Immunohistochemical preparations revealed a positivity for actin, desmin and vimentin. Despite an operative resection and an attach of polychemotherapy it developed a local relapse and multiple lymph node metastases. Within the scope of this case report apart from an detailed bibliography it ought to be discussed the origin of the tumor into the atrium and the differential diagnosis from other sarcoma.