Flashcards in Chapter 58 Fetal Face and Neck Deck (34):
Congenital anomalies of the face affect 1 in ____ births.
The nasal pits are formed as the surface ______ thickens into the nasal _____ on each side of the frontal nasal prominence; as these plaecodes invaginate, the nasal pits are formed.
Off-axis, or nonmidline, encephaloceles have also been reported with _________.
amniotic band syndrome
premature closure of any or all six of the cranial sutures
Unusually misshapen skull with a clover-leaf appearance in the anterior view
Clover leaf skull has been associated with numerous skeletal dysplasias (most notably, _________) and ________
thanatophoric dysplasia , ventricomegaly
Premature closure of the metopic suture may cause the forehead to have an elongated tall appearance in the sagittal plane and appear triangular shaped in the axial plane.
obsurved in a fetus with a lemon-shaped skull (from spina bifida) or with skeletal dysplasias.
with depressed or absent nasal bridge, is underdevelopment of the middle structures of the face.
Midface hypoplasia or maxillary hypoplasisa
median cleft face syndrome consisting of a range of midline facial defects involving the eyes, forehead, and nose.
Frontal dysplasia abnormalities include...
ocular hypertelorism, a variable bifid nose, a broad nasal bridge, a midline defect of the frontal bone, and extension of the frontal hairline to form a widow's peak.
The optimal gest age for measurements of fetal NT is _____ weeks of gest.
11weeks-13 weeks 6 days
Fetal crown-rump should be within the range of ______ mm
A NT measurement greater than ____ mm is abnormal
Congenital overgrowth of tissues
Beckwith-Wiedemann syndrome commonly co-exists with ...
omphalocele, macroglossia and vescoromegaly, and organomegaly
Micrognathia is associated with many conditions that can be subdivided into three groups of anomalies:
- Chromosome anomalies (trisomy 18 and triploidy)
- skeletal dysplasias
- Primary mandibular disorders (Pierre Robin syndrome and Trecher Collins syndrome)
Ear malformation may be observed in _________
inadequate development of the ear
Treacher Collins Syndrome
lacimal duct cysts (dacryocystoceles), dermoids, and hemangiomas.
abnormal protrusion of the eye
Hypotelerism is associated with several syndromes and other anomalies, including ________, microcephaly, craniosynostoses, and __________.
holoprosencephaly, phenylketonuria (PKU)
_________ is found im fetuses exposed to phenytomin (Dilantin)
Evaluation of the nasal triad should assess...
- nostril symmetry -nasal septum integrity, and -continuity of the upper lip, to exclude cleft lip and palate.
1 per ____ births in Native Americans are affected by cleft palate.
Cleft palate occurs when the _________ fail to fuse at the midline.
lateral palatine processes
Teratoma located in the oropharynx. These masses may be highly complex and contain solid, cystic, or calcified components.
Results from the malformation of the lymphatic system that leads to single or multilocuated lymph-filled cavities around the neck.
The differential considerations for cystic hygromas include....
meningomyelocele, encephalocele, nuchal edema, brachial cleft cyst, cystic teratoma, hernagioma, and thyoglossal duct cyst.