What is facial dysmorphology?
What is facial dysmorphology?
In this section, drawings are used to depict terminology and to illustrate certain aspects of facial variation. Many features of the face that are considered abnormal are continuous, quantitative traits, plotting above or below 2 S.D. from the mean.
What is a Dysmorphologist?
A dysmorphologist is a boarded pediatrician (American Board of Pediatrics) who has spent two to three additional years in training focusing on the causes, treatment and prevention of birth defects.
What is the prefix of dysmorphology?
(dis’mōr-fol’ŏ-jē) The study of developmental structural defects; a branch of clinical genetics. [dys- + G. morphē, form, + logos, study]
What are railroad ears?
“Railroad track” ears: The top part (curve) of the outer ear is underdeveloped, folded over, and parallel to the curve beneath it, giving the appearance of a railroad track.
What is subtle dysmorphism?
A dysmorphic feature is an abnormal difference in body structure. It can be an isolated finding in an otherwise normal individual, or it can be related to a congenital disorder, genetic syndrome or birth defect. Dysmorphology is the study of dysmorphic features, their origins and proper nomenclature.
What is Nondysmorphic?
The “phenotypically normal,” or “nondysmorphic” category included children with fewer than 3 MPAs.
What does the prefix mean in the term dysmorphology quizlet?
Arthrodesis. In the term dysmorphology, identify the prefix and its meaning. dys; difficult, bad.
Why does FAS affect facial features?
The pattern of facial defects that occur as a result of ethanol exposure during development primarily affects the midline of the face, altering morphology of the eyes, nose, and lips. Ethanol damage to cranial neural crest cells (CNCC) early in embryonic development is responsible for these minor midline abnormalities.
What is soft Dysmorphism?
A dysmorphic feature is an abnormal difference in body structure. It can be an isolated finding in an otherwise normal individual, or it can be related to a congenital disorder, genetic syndrome or birth defect.
What is the study of dysmorphology?
Dysmorphologyrefers to alternations of ‘normal’ or typical morphology that can be observed and/or measured in a population. Traditionally, the study of dysmorphology is concerned with the description and categorization of birth defects, diagnosis of syndromes, and investigation and counseling of affected individuals and their families.
What is the difference between teratology and tetralogy?
Not to be confused with tetralogy. Teratology is the study of abnormalities of physiological development in all organisms including plants during the entire life span. It is a sub-discipline in medical genetics which focuses on the classification of congenital abnormalities is dysmorphology.
What is the field of teratology?
With the growth of understanding of the origins of birth defects, the field of teratology as of 2015 overlaps with other fields of science, including developmental biology, embryology, and genetics. Until the 1940s teratologists regarded birth defects as primarily hereditary.
Why is significant dysmorphology an etiologic indicator?
The presence of significant dysmorphology is an indicator that embryogenesis did not proceed normally. Being able to distinguish the subgroup of children in which embryogenesis went awry from those with apparently normal early development allows us to classify subgroups of children that differ for an etiologic indicator.