Spontaneous healing of occlusive type F coronary artery dissection.

In the presence of resistance to circumferential expansion of atherosclerotic plaques due to mechanical dilation high shear stresses between stiff plaques and normal ves- sel segments may occur and thus may result in coronary dissection. Limited data are available on the clinical and angiographic outcome of severe (type E, type F) coronary dissections. Herein, we report a case of type F dissection (causing total occlusion) of proximal right coronary artery during balon angioplasty which healed spontaneously. In conclusion, al- though the type F dissection has worse prog- nosis due to complete cessation of distal ves- sel perfusion, the possibility of spontaneous healing should be kept in mind after unsuc- cessful intervention.