Category: M
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Mixed dentition
A set of both primary and permanent teeth, as in children between 6 and 13 years of age.
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Microvessel density
The concentration of small blood vessels in a malignant tumor. It reflects the amount of angiogenesis within the tumor and has been correlated with the ability of tumors to grow and metastasize.
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Mucous degeneration
Deposition of mucus in the connective tissue of organs or in epithelial cells.
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Manual defibrillator
A defibrillator that requires the operator to assess the need for defibrillation (by reviewing monitor data and the patient’s clinical condition), select an energy level, charge the machine, and deliver shock.
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Malignant deciduitis
A uterine tumor, now commonly called a choriocarcinoma.
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Mechanical debridement
The removal of necrotic or devitalized tissue from a wound using friction, hydrotherapy, scraping, or wet-to-dry dressings.
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Mechanical dead
The volume of gas exhaled into a tubing system and rebreathed on the subsequent breath.
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Mother cyst
A hydatid cyst enveloping smaller ones.
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Meniscus cyst
A fluid-filled cyst often associated with a degenerative horizontal meniscal tear, more frequently seen in the lateral meniscus of the knee. This ganglion-like cyst may present with a palpable mass at the joint line of the knee and can be visualized by magnetic resonance imaging.
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Membranous croup
Inflammation of the larynx with exudation forming a false membrane.