Category: C

  • Cystadenocarcinoma

    A glandular malignancy that forms cysts as it grows.  

  • Congenital cyst

    A cyst present at birth resulting from abnormal development, such as a dermoid cyst, imperfect closure of a structure as in spina bifida cystica, or non-closure of embryonic clefts, ducts, or tubules, such as cervical cysts.  

  • Complex cyst

    A cyst that consists of solid material and fluid-filled cavities; it may have walls of tissue inside it or internal echoes. When a complex cyst is identified on ultrasound, surgical removal is generally indicated to exclude malignancy.  

  • Cynic spasm

    Spasm of the facial muscles causing a grin or snarl like a dog.  

  • Cynanthropy

    Insanity in which the patient behaves like a dog.  

  • Cymatic therapy

    The therapeutic uses of music and sound.  

  • Cylindruria

    The presence of cylindroids in the urine.  

  • Cylindroma

    A skin tumor of apocrine origin usually found on the face or forehead containing a collection of cells forming cylinders.  

  • Cylindroadenoma

    An adenoma containing cylindrical masses of hyaline material.  

  • Crossed cylinder

    Two cylindrical lenses at right angles to each other; used in diagnosing astigmatism.