Doctors administer sclerotherapy by injecting a sclerant (a sterile chemical which irritates the vein lining) into your vein causing it to close and eventually be reabsorbed into the body. To compensate for the loss of the vein, blood circulation is re-routed through healthy veins.
Abstract. 1  Metaplastic breast cancer (MBC) is a rare subtype of invasive breast cancer that tends to have an aggressive clinical presentation as well as a variety of distinct histologic designations. Few systemic treatment options are available for MBC, as it has consistently shown a suboptimal response to standard chemotherapy regimens.
P wave. the first complex of the electrocardiogram, during sinus and atrial rhythms, representing depolarization of the atria; if the P wave is retrograde or ectopic in axis or form, it is labeled P'. wave, the component of the cardiac cycle shown on an electrocardiogram as an inverted U-shaped curve that follows the T wave and precedes the QRS complex. It represents atrial depolarization.