Main features of achondroplasia?
rhizomelic limb shortening foramen magnum compression short stature autosomal dominant risk increases with paternal age
which syndrome does the risk increase with paternal age?
achondroplasia
Main features of Waardenburg syndrome
sensorineural and hearing impairments white forelock iris heterochromatia premature greying areas of skin hypo pigmentation
Main features of Digeorge syndrome?
learning difficulties cleft palate sound nasal - velopharyngeal insufficiency congenital heart defect hypocalcaemia seizures immune deficiency renal malformations
what chromosome is affected in Digeorge syndrome?
22
What chromosome is affected in williams syndrome?
7
Main features of williams syndrome?
cocktail party speech congenital heart disease - supravalvic aortic stenosis - peripheral pulmonary artery stenosis hypercalcaemia
Main features of kabuki syndrome?
Persistant fetal finger pads cleft palate poor growth premature breast development hearing impairment congenital heart disease
main features of teachers collins syndrome
big eyes
small chin and sunken cheekbones
failure of migration of neural crest cells in the face
hearing impairment
beck with-weidemann syndrome features?
omphecele/exomphalos = intestines come out of stomach ear pits large tongue hemihypertrophy increased risk of films tumour hypoglycaemia
peutz-jeghers syndrome
prone to GI polyps
cancer syndrome
can lead to malignancies - colorectal, gastric, breast, pancreatic