Category: S

  • Schistocephalus

    A fetus with a cleft head.  

  • Schidtz tonometer

    An instrument for measuring intraocular pressure by the degree of indentation produced by pressure on the cornea.  

  • Schilling’s classification

    A method of classifying polymorphonuclear neutrophils into four categories according to the number and arrangement of the nuclei in the cells.  

  • Schematic

    To a diagram or model; showing part for part in a diagram.  

  • Schedule

    A timetable, usually written; a plan for action to achieve a certain goal.  

  • Schiiffner’s dots

    Minute granules present in the red blood cells when they are infected by Plasmodium vivax.  

  • Schatzki ring

    A lower esophageal mucosal ring composed of a thin annular weblike tissue located at the squamocolumnar junction at or near the border of the lower esophageal sphincter. When the diameter of the ring is less than 1.3 cm, dysphagia is present. Treatment involves stretching the ring with dilators.  

  • Schamroth sign

    A method of assessing a patient for evidence of clubbing of the fingers. The patient is asked to place the nails of the right and left index fingers against each other. In health, a small diamond-shaped gap is seen between the proximal margin of the nails. In patients with clubbing, this gap is filled by…

  • Scedosporium

    A species of filamentous fungi that grow in soil and are occasionally responsible for fungal infections in humans, e.g., in the lung after inhalation, in skin, or in contaminated wounds.  

  • Scattergram

    A graphical means of displaying information, in which multiple data points, representing the relation between two variables, are clustered.