Kounis syndrome: two extraordinary cases.

Acute myocardial infarction occurring during the course of an allergic reaction constitutes the Kounis syndrome. This syndrome is caused by inflammatory mediators released mainly from activated mast cells and the interrelated via bidirectional stimuli macrophages and T-lymphocytes. Since activated mast cells abound at the areas of plaque erosion or rupture in patients suffering from acute myocardial infarction a common pathway between allergic and non allergic coronary events seems to exist.

Large hydatic cyst of the left ventricle associated with syncopal attacks.

An unusual case of giant hydatic cyst of the left ventricle producing cardiac and systemic symptomatology is described. The patient had suffered presyncopal and syncopal attacks and the final diagnosis was made by combination of echocardiography, magnetic resonance imaging and serological tests. Surgical resection of the cyst supplemented by medical therapy yielded favorable results.

Hypersersensitivity and Kounis syndrome due to a viper bite.

A 60-year-old male was bitten by a venomous snake (Vipera ammodytes) and gradually developed signs of an allergic reaction including generalized itching, generalized rash, and chest discomfort. This was followed by severe retrosternal pain with electrocardiographic evidence of an inferior myocardial ischemia progressing to acute myocardial infarction. Cardiac enzymes and troponin, serum tryptase, and histamine were elevated.

Snake venom poisoning in Greece. Experiences with 147 cases.

Background: Snake venom poisoning is a medical emergency requiring immediate attention. Bites from poisonous European snakes can lead to local tissue damage and systemic symptoms. Vipera ammodytes accounts for the most envenomation in Greece.

Ascites and other extracardiac manifestations associated with right atrial myxoma: a case report.

Right atrial myxomas are rare intracardiac tumors that often pose difficulties in diagnosis. Right ventricular failure and ascites ensuing from tricuspid valve orifice obstruction are potentially dangerous complications. Early diagnosis of cardiac myxoma is important since surgical treatment leads to disappearance of all symptoms with a low rate of recurrence and good long-term survival.