Category: C

  • Clinocephaly

    Congenital defect in which the top of the head appears to be pushed in (is concave); also called clinocephalism. Congenital defect in which one or more fingers or toes are abnormally positioned or bent. Congenital flatness or saddle shape of the top of the head, caused by bilateral premature closure of the sphenoparietal sutures.  

  • Cleft foot

    Abnormal condition in which the separation between the third and fourth toes extends into the foot. A rare congenital abnormality characterised by the absence of one or more toes and a deep central cleft that divides the foot into two. It is sometimes known as lobster foot, or lobster claw. It may be accompanied by…

  • Clawfoot

    Deformity of the foot characterized by an abnormally high arch and hyperextension of the toes, giving the foot a clawlike appearance. Treatment depends on the severity of the condition; it may involve surgery. Also called pes cavus. A deformity of the foot marked by an excessively high longitudinal arch, usually accompanied by dorsal contracture of…

  • Clavulinic acid

    Antibiotic, often used in combination with amoxicillin, to treat moderate to severe infections.  

  • Clairvoyance

    Ability to discern objects or persons not perceptible to the senses or to be aware of events that occur beyond the range of ordinary perception. The alleged ability to be aware of events that occur at a distance without receiving any sensory information concerning those events. A type of paranormal or psychic phenomenon that manifests…

  • Cisterna

    Cisternae, reservoir, especially for holding lymph or spinal fluid (e.g., cistema chyli, chyle cistern). One of the enlarged spaces beneath the arachnoid that act as reservoirs for cerebrospinal fluid. The largest (cisterna magna) lies beneath the cerebellum and behind the medulla oblongata.  

  • Circulatory failure

    Failure of the cardiovascular system to supply adequate levels of blood to body tissues, as a result of hemorrhage, heart malfunction, or collapse of the peripheral vascular system. Failure of the cardiovascular system to provide body tissues with enough blood for proper functioning. It may be caused by cardiac failure or peripheral circulatory failure, as…

  • Circle

    Structure or part with a closed, ring-like shape (e.g., circle of Willis, consisting of communicating arteries in the brain). The part of the pin curl that forms a complete circle; also, the hair that is wrapped around the roller.  

  • Ciliary movement

    Rhythmic action of hairlike structures (cilia) in certain body parts (e.g., the lining of the bronchial tubes); the sweeping action helps to move mucus or remove foreign particles (e.g., dust) from the tissue. Rhythmic movement of the cilia of a ciliated cell or epithelium.  

  • Chromoblastomycosis

    Skin disease, caused by infection with a fungus, characterized by itchy, warty nodules in a break in the skin that sometimes spread and ulcerate. Treatment is by excision of the nodules and by topical antibiotics. A chronic fungal infection of the skin that may follow an injury; for example, a wound from a wood splinter.…