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Diseases & conditions A-Z List

Diseases & Conditions A-Z List - «M»:

  1. Meckel's diverticulum Meckel's diverticulum
    A Meckel's diverticulum is a pouch on the wall of the lower part of the small bowel that is present at birth (congenital). The diverticulum may contain tissue from the stomach or pancreas. Causes A Meckel's diverticulum is tissue left over from structures in the unborn baby's digestive tract that w...
  2. Meckel’s diverticulectomy Meckel’s diverticulectomy
    Meckel's diverticulectomy is surgery to remove an abnormal pouch. This pouch is called a Meckel's diverticulum. It forms in the wall of the small intestine. Description You will receive general anesthesia before surgery. This will make you unconscious and unable to feel pain. If you have open sur...
  3. Meclofenamate overdose Meclofenamate overdose
    Meclofenamate (Meclomen) is a nonsteroidal anti-inflammatory drug (NSAID) used to treat arthritis. Meclofenamate overdose occurs when someone accidentally or intentionally takes more than the normal or recommended amount of this medication. This is for information only and not for use in the treatme...
  4. Meconium Meconium
    Meconium is a thick, sticky, greenish-black substance. It is the medical term for the newborn infant's first stools. Meconium is made of amniotic fluid, mucus, lanugo (the fine hair that covers the baby's body), bile, and cells that have been shed from the skin and the intestinal tract. Infant stool...
  5. Meconium aspiration syndrome Meconium aspiration syndrome
    Meconium aspiration syndrome is a serious condition in which a newborn breathes a mixture of meconium and amniotic fluid into the lungs around the time of delivery. Causes Meconium is the term used for the early feces (stool) passed by a newborn soon after birth, before the baby has started to dige...
  6. Medial Medial
    Medial means toward the middle or center. It is the opposite of lateral. The term is used to describe general positions of body parts. For example, the chest is medial to the arm. Your health care provider may use this term to clearly explain the relationship between things found during a physical e...
  7. Medial collateral ligament (MCL) injury of the knee Medial collateral ligament (MCL) injury of the knee
    Medial collateral ligament (MCL) injury is an injury to the ligament on the inner part of the knee. This ligament keeps your shin bone (tibia) in place. It can be a stretch, partial tear, or complete tear of the ligament. Considerations The medial collateral ligament (MCL) goes from the inside sur...
  8. Mediastinal tumor Mediastinal tumor
    Mediastinal tumors are growths that form in the area that separates the lungs. This area contains the heart, large blood vessels, windpipe (trachea), thymus gland, and connective tissues. Causes The mediastinum is the part of the chest that lies between the sternum and the spinal column, and betwee...
  9. Mediastinitis Mediastinitis
    Mediastinitis is swelling and irritation (inflammation) of the area between the lungs (mediastinum). This area contains the heart, large blood vessels, windpipe (trachea), esophagus, thymus gland, lymph nodes, and connective tissues. Causes Mediastinitis may occur suddenly (acute) or may develop sl...
  10. Mediastinoscopy with biopsy Mediastinoscopy with biopsy
    Mediastinoscopy with biopsy is a procedure in which a lighted instrument (mediastinoscope) is inserted in the space in the chest between the lungs (mediastinum), and tissue is taken (biopsy) from any unusual growth or lymph nodes. How the Test is Performed This procedure is done in the hospital. Yo...
  11. Mediterranean diet Mediterranean diet
    The Mediterranean diet has fewer meats and carbohydrates and more plant-based foods and monounsaturated (good) fat than a typical American diet. Many people who live in Italy, Spain, and other countries in the Mediterranean region have eaten this way for centuries. Following the Mediterranean diet m...
  12. Medullary carcinoma of thyroid Medullary carcinoma of thyroid
    Medullary carcinoma of the thyroid is cancer of the thyroid gland that starts in cells that release a hormone called calcitonin. Such cells are called "C" cells. Causes The cause of medullary carcinoma of the thyroid (MTC) is unknown. Unlike other types of thyroid cancer, MTC is less likely to be...
  13. Medullary cystic kidney disease Medullary cystic kidney disease
    Medullary cystic kidney disease (MCKD) is a hereditary disorder in which cysts in the center of each kidney cause the kidneys to gradually lose their ability to work. Causes Medullary cystic kidney disease (MCKD) is very similar to the childhood disease familial juvenile nephronophthisis (NPH). Bot...
  14. Megaloblastic anemia Megaloblastic anemia
    Megaloblastic anemia is a blood disorder in which there is anemia with larger-than-normal red blood cells. Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells provide oxygen to body tissues. Causes Megaloblastic anemia is usually caused by a deficie...
  15. Meibomianitis Meibomianitis
    Meibomianitis is an inflammation of the meibomian glands, a group of oil-secreting (sebaceous) glands in the eyelids. These glands have tiny openings to release oils onto the surface of the cornea. Causes Any condition that increases the thickness of the oily secretions of the meibomian glands will...