metopism


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metopism

(ˈmɛtəˌpɪzəm)
n
(Medicine) a congenital disfigurement of the forehead in which the frontal suture, which normally undergoes closure during childhood, persists
References in periodicals archive ?
Although an incidence about skull morphology like the metopism, a rare variant suture persistence, in Northeastern Thais has been previously documented (Khamanarong et al.
DISCUSSION: In the present study metopism or metopic suture was found in 3% cases.
According to Baaten, et al (6) people who live in rural area have a high incidence of metopism compared to people living urban area, with ratio 4: 1 to 4: 2.
Sometimes when it fails to ossify and persists as a complete suture extending from bregma to nasion, it is called metopism.
The incidences of metopism vary among population of different regions and different races as reported by various workers.
KEY WORDS: Human Anatomy; Metopic suture; Metopism.
metopism can be related to varied causes, such as: abnormal growth of the cranial bones, pathologic metopism triggered by hydrocephalus, growth interruption, heredospecific factors, sexual influence, heredity, atavism (emergence of a feature supposedly present in a remote ancestral, as a function of random recombination of genes or environmental conditions favorable to its expression in the embryo), stenocrotaphia (abnormal narrowing of the temporal area of the head), plagiocephaly (cranial malformation causing a twisted and asymmetrical head because of the synostosis of the cranial sutures), scaphocephaly (deformed head, projecting forward like the keel of a boat), mechanical causes and hormonal dysfunction.