Category: M

A surgical procedure for treating stenosis of the mitral valve of the heart, in which the stenosed valve leaflets are separated from each other. Patients may undergo an open or a closed procedure.  

Area of the chest wall over the apex of the heart where mitral valve sounds are heard best (usually between intercostal spaces 5-6 to the left of the midclavicular line).  

The number of mitoses seen in a biopsy specimen per square millimeter of tissue examined. Mitoses in tissue are indicative of malignancy (cancer). The higher the mitotic index, the more rapidly a tumor is dividing, and the worse the prognosis.  

The network of microtubules in the cytoplasm of a cell.  

A mite belonging to the families Sarcoptidae and Psoroptidae, which causes mange in many species of animals.  

The therapeutic use of mists, e.g., as a means of administering a drug for inhalation.  

In England and other parts of the British Commonwealth, the title of address of a surgeon.  

Menstruation not occurring at the time it was expected or regularly occurs monthly.  

An incorrect, dishonest, or false represenation of facts.  

An organ or tissue donor who is a family member of the organ recipient, but whose human leukocyte antigens are not identical to those of the recipient. In general in organ transplantation, organ and recipient survival are highest when the donor and the recipient share the same HLA antigens.