Category: I

  • Imprint cytology

    The study of cellular morphology or of tissue diseases after a clinical specimen, e.g., a bone marrow biopsy, is dabbed on a microscope slide. It is used in some settings as an adjunct or alternative to fine needle aspiration biopsy, frozen sectioning, and other pathological techniques.  

  • Imprecision

    The amount or degree of random error in an assay, research study, or calculation, usually represented by the standard deviation, coefficient of variation, or range.  

  • Imponderable

    Incapable of being weighed or measured.  

  • Implicit association test

    A test used to assess the attitudes or biases of the subject toward particular words or ideas. The examiner presents the subject with two words (e.g., the names of two different medical treatments) and two concepts (e.g., “safe” and “hazardous”). The subject is asked to choose which of the concepts best matches the offered words.…

  • Implantable collamer lens

    An artificial lens that can be inserted between the cornea and a patient’s own lens, used to correct severe nearsightedness.  

  • Intracavitary implant

    The insertion of an applicator containing a radioactive source directly into a hollow organ to deliver a high radiation dose to the organ while sparing the surrounding tissues.  

  • Interstitial implant

    The insertion of an applicator containing a radioactive source directly into a tumor to deliver a high radiation dose while sparing the surrounding tissues.  

  • Impetigo herpetiformis

    A rare and occasionally life-threatening eruption that typically occurs in the third trimester of pregnancy. It is pathologically indistinguishable from pustular psoriasis. A uncommon form of impetigo marked by the emergence of shallow pustules. These may appear separately but often cluster in small round groups. It primarily affects pregnant women and can sometimes be quite…

  • Impetigo contagiosa

    A bacterial infection of the skin, caused by streptococci or staphylococci and marked by yellow to red, weeping and crusted or pustular lesions, esp. around the nose, mouth, and cheeks or on the  extremities. Associated symptoms include itching, burning, and regional lymphadenopathy; glomerulonephritis is a rare but serious complication. The disease is common in children…

  • Impetiginous

    Relating to or resembling impetigo.