Is left ventricular fibromuscular band a specific substrate for idiopathic left ventricular tachycardia?
The presence of a left ventricular fibromuscular band is not a specific anatomic substrate for idiopathic left ventricular tachycardia.
There is evidence for progression from 'thin' to 'thick' melanoma over a 6-to 30-year period. Poor prognosis 'thick' melanomas are currently increasing. Providing removal of 'thin' melanomas is sustained, a decline in 'thick' melanomas is expected but may take decades.