Category: L

  • Lobar infiltrate

    A well-defined site of lung consolidation, seen on the chest radiograph as an area of increased density confined within a specific lobe or segment.  

  • Low-grade infection

    A loosely used term for a subacute or chronic infection with only mild inflammation and without pus formation.  

  • Local infection

    An infection that has not spread but remains contained near the entry site. An infection, such as a pimple or abscess, that is confined to a particular part of the body and appears as a lesion containing pus.  

  • Lacunar infarction

    A small stroke deep within the brain (e.g., in the internal capsule, basal ganglia, thalamus, or pons) caused by damage to or a blockage of a tiny penetrating artery. Lacunar infarctions are associated with a kind of vascular damage caused by chronic high blood pressure called lipohyalinosis. They may be asymptomatic, showing up only on…

  • Lenticular process of incus

    The long process of the incus, a middle ear ossicle. It articulates with the head of the stapes. The incus is commonly known as the anvil.  

  • Local immunity

    Immunity limited to a given area or tissue of the body.  

  • Latent image

    In radiology, the image within the emulsion of an exposed radiograph that is invisible because it as not been developed. In the realm of visual records, there exists a latent or imperceptible depiction brought forth through the interaction of x-ray or luminous energy with a film’s coating. This enigmatic formation, once subjected to the process…

  • Latent hyperopia

    Hyperopia in which the error of refraction is overcome and disguised by ciliary muscle action.  

  • Lunar hymen

    A hymen shaped like a crescent moon.  

  • Labyrinthine hydrops

    Excessive fluid in the organ of balance in the inner ear. It may cause pressure or a sense of fullness in the ears, hearing loss, and vertigo. It often is found in Meniere’s disease.