[Giant tumor from the nerve sheath].

A schwannoma is a benign nerve sheath tumor derived from Schwann cells. They are usually small and solitary tumors more frequently localized in cranial nerves and the spinal cord and rarely in the limbs. Some cases have been reported involving extremities (mainly the upper ones) but with a small size.

Concurrence of multiples factors in the occurrence of ventricular arrhythmia in patient treated with aripiprazole.

Introduction: The Importance of the cardiovascular effects, fundamentally the ventricular arrhythmias, produced by the antipsychotic ones, is discussed.

Clinical Case: 28 year old patient with morbid obesity, operated by bariatric surgery, with good result, suffers a ventricular no supported polymorphic tachycardia while he was heightening treatment with aripiprazole and fluoxetine.

Conclusions: To value the influence of diverse factors for the production of ventricular arrhythmias emphasizing fundamentally the interactions of aripiprazole and the loss of weight.