Syndromes Flashcards
congenital cataracts, extramedullary hematopoesis (blueberry muffin rash), deafness, congenital heart disease
congenital rubella. profound deafness.
GJB2/connexin 26
non-syndromic AR SNHL
Cafe au lait spots, cataracts, bilateral acoustic neuroma
NF2; chromosome 22. Merlin protein. Autosomal dominant
NF1 also AD but not usually associated with hearing loss unless a fibroma encroaches on middle/inner ear.
Cleft palate, micrognathia, retinal detachments, cataracts, marfanoid habitus
Stickler. AD. COL2A1 on car 12. SNHL or mixed.
DNFA mutations
non-syndromic AD SNHL
Ear pits or tags and renal issues (wide range)
branchio-oto-renal; EYA1. AD.
Thyroid goiter, EVA or modini aplasia
Pendred. AR. PDS/Pendrin. SNHL. Profound SNHL.
Blue sclerae, joint hyperelasticity
Osteogenesis imperfecta. COLIA 1/2.
early onset is severe and bilateral. late onset is Meniere’s like syndrome with bouts of vertigo/hydrops
otic syphilis
Stapes fixation with perilymphatic gusher and mixed hearing loss
non-syndromic X-linked hearing loss
Cardiac arrhythmia and hearing loss
Jervell lange nielsen. AR. KVLQT1; need to get EKG. Potassium channels affected. Schiebe aplasia. PAS positive nodules in cochlea.
Hemifacial microsomia, otomandibular dysostosis, epibulbar lipodermoids, coloboma, vertebral anomalies
Goldenhaar syndrome. Multifactorial inheritance.
Autosomal dominant conditions
Waardenberg, Treacher collins. Osteogenesis imperfecta. Otosclerosis. Stickler. Branchio-oto-renal. NF1 and NF2. Crouzon. Apert’s.
Autosomal recessive conditions
Pendred. Usher. Jervell lange nielsen.
Goldenhaar*.
TCOF1, treacle.
Treacher Collins
PAX3
Usher. AR
KVLQT1
Jervell lange nielsen. AR. KVLQT1; need to get EKG. Potassium channels affected. Schiebe aplasia. PAS positive nodules in cochlea.
Upper lid coloboma vs lower lid coloboma?
Upper = Goldenhaar. Lower = Treacher collins (AD)
The four types of Waardenburg?
Type 1 - white forelock, heterochromia, vitiligo, etc + dystopia canthorum. Type 2 = type 1 minus dystopia canthorum. Type 3 = type 1 + mental retardation, microcephaly. Type 4 = type 2 + hirschsprung. AD.
COL4A5 vs COL2A1
Alport’s (COL4A5; XLR), Stickler (COL2A1; AD)
Most common AD vs AR cause of syndromic congenital hearing loss?
AD =Waardenberg (also most common AD overall). AR = Usher
The 3 types of Usher?
Type 1 = poor hearing, no vestibular function. Type 2 = moderate hearing loss, normal vestibular function. Type 3 = progressive hearing loss, variable vestibular function. AR.
Renal agenesis/dysplasia vs asymptomatic hematuria in infancy eventually progressing to renal failure?
Renal agenesis/dysplasia = branchio-oto-renal (AD; EYA1)
Asymptomatic hematuria progressing = Alport’s (XLR; COL4A5)
Interstitial keratitis (2 possible answers) vs retinitis pigmentosa
Cogan’s / otic syphilis vs Usher’s
The four types of cochlear aplasia?
Michel - complete agenesis of the cochlea
Mondini - only a basal turn
Schiebe (pars inferior dysplasia) - cochleosaccular dysplasia
Alexander aplasia - cochlear duct abnormal; bony anatomy normal
Name 2-3 hearing loss syndromes/conditions with Mondini Aplasia
Pendred, Waardenberg, Treacher Collins, CMV, CHARGE. Also Wildervanck (shrug)
Name 2-3 hearing loss syndromes/conditions with Schiebe aplasia
Jervell lange Nielsen, Usher, Waardenburg, rubella. Also Refsum (shrug)
Which cochlear aplasias benefit from hearing rehabilitation with conventional amplification?
Mondini, Schiebe, Alexander