Category: P
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Poikilocytosis
A condition in which poikilocytes exist in the blood. The presence of abnormally shaped red cells (poikilocytes) in the blood Poikilocytosis is particularly marked in myelofibrosis but can occur to some extent in almost any blood disease. This is a term used to describe the variation seen in the shape of red blood cells in…
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Poikilocyte
An unusually large red blood cell with an irregular shape. An abnormally shaped red blood cell (erythrocyte). Poikilocytes may be classified into a variety of types on the basis of their shape: for example elliptocytes (ellipsoid) and schistocytes (semilunar). A teardrop or pear-shaped red blood cell, seen in myelofibrosis and certain anemias.
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Podarthritis
The swelling of one or more joints of the foot.
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Podalic version
The procedure of turning a fetus in the uterus by its feet. Altering the position of a fetus in the womb so that its feet will emerge first at birth. Using two hands (one in side the uterus and one on the abdominal wall) to change a twin fetus from a breech to a vertex…
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Podalic
Relating to the feet.
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Pockmarked
Referring to a face with scars from smallpox. Pitted or marked with scars from healed pustules, especially those due to smallpox.
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Pockmark
A scar left by a pustule, as in smallpox.
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Pocket
A cavity in the body. An abnormal niche between a tooth and the gum. A false pocket is caused by an overgrowth of gum; a true pocket is caused by destruction of periodontal membrane and alveolar bone. True and false pockets can exist together.
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Pock
Localised lesion on the skin, due to smallpox or chickenpox. A small pus-filled eruption on the skin characteristic of chickenpox and smallpox rashes. A pustule that appears in diseases like smallpox, and the scar it leaves behind.
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Pneumoradiography
An X-ray examination of part of the body after air or a gas has been inserted to make the organs show more clearly. X-ray examination of part of the body using a gas, such as air or carbon dioxide, as a contrast medium. For example, introduction of air into the ventricles of the brain enables…