Micrognathism
{{short description|Condition in which the jaw is small}}
{{distinguish|Retrognathism}}
{{Infobox medical condition (new)
| name = Micrognathism
| image = Mia - whs.jpg
| caption = Girl with Wolf–Hirschhorn syndrome
| pronounce =
| field = Medical genetics
| synonyms = Micrognathia, strawberry chin, hypognathia{{cite journal|last1=Martínez-Frías|first1=ML|last2=Martín|first2=M|last3=Pardo|first3=M|last4=Torres|first4=M|last5=Cohen MM|first5=Jr|title=Holoprosencephaly and hypognathia with two proboscides: report of a case and review of unusual proboscides.|journal=Journal of Craniofacial Genetics and Developmental Biology|date=1993|volume=14|issue=4|pages=231–4|pmid=7883869}} hypognathism
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Micrognathism is a condition where the jaw is undersized. It is also sometimes called mandibular hypoplasia.{{Cite journal |last1=Hassani |first1=Mohammad-Esmaiil |last2=Karimi |first2=Hamid |last3=Hassani |first3=Hosein |last4=Hassani |first4=Ali |date=2014-01-01 |title=Bilateral mandibular distraction in micrognathism or hypoplasia of mandible, hazrat fatemeh hospital |url=https://linkinghub.elsevier.com/retrieve/pii/S2221618914600640 |journal=Journal of Acute Disease |volume=3 |issue=4 |pages=296–299 |doi=10.1016/S2221-6189(14)60064-0 |issn=2221-6189|doi-access=free }} It is common in infants,{{Cite journal |last1=Cang |first1=Zhengqiang |last2=Cui |first2=Jiangbo |last3=Pei |first3=Jiaomiao |last4=Wang |first4=Zheng |last5=Du |first5=Yichen |last6=Mu |first6=Siqi |last7=Dou |first7=Wenjie |last8=Fan |first8=Xing |last9=Zhang |first9=Xi |last10=Li |first10=Yang |date=2023-04-12 |title=Prenatal diagnosis of micrognathia: a systematic review |journal=Frontiers in Pediatrics |language=English |volume=11 |doi=10.3389/fped.2023.1161421 |doi-access=free |issn=2296-2360 |pmc=10130438 |pmid=37124181}}{{Cite journal |last1=Berger |first1=Jessica A. |last2=Nelson |first2=Olivia |last3=Staben |first3=James |last4=Javia |first4=Luv R. |last5=Simpao |first5=Allan F. |last6=Khalek |first6=Nahla |last7=Oliver |first7=Edward R. |last8=Adzick |first8=N. Scott |last9=Lin |first9=Elaina E. |date=2024 |title=Immediate postdelivery airway management of neonates with prenatally diagnosed micrognathia: A retrospective observational study |url=https://onlinelibrary.wiley.com/doi/10.1111/pan.14806 |journal=Pediatric Anesthesia |language=en |volume=34 |issue=3 |pages=267–273 |doi=10.1111/pan.14806 |pmid=38069629 |issn=1460-9592}} but is usually self-corrected during growth, due to the jaws' increasing in size. It may be a cause of abnormal tooth alignment and in severe cases can hamper feeding.{{cite journal|last1=Hong|first1=Paul|last2=Brake|first2=Maria K.|last3=Cavanagh|first3=Jonathan P.|last4=Bezuhly|first4=Michael|last5=Magit|first5=Anthony E.|title=Feeding and mandibular distraction osteogenesis in children with Pierre Robin sequence: A case series of functional outcomes|journal=International Journal of Pediatric Otorhinolaryngology|volume=76|issue=3|year=2012|pages=414–418|issn=0165-5876|doi=10.1016/j.ijporl.2011.12.023|pmid=22245167}} It can also, both in adults and children, make intubation difficult, either during anesthesia or in emergency situations.
Causes
File:Inferior maxilla arrest.jpg
File:Pitt-rogers-danks_syndrome.jpg (PRDS)]]
According to the NCBI, the following conditions feature micrognathism:{{Cite web |title=Micrognathia (Concept Id: C0025990) |url=https://www.ncbi.nlm.nih.gov/medgen/44428 |access-date=April 2, 2024 |website=NCBI}}
- 11q partial monosomy syndrome
- 3-methylglutaconic aciduria, type VIIB
- 46,XY sex reversal 4
- 4p partial monosomy syndrome
- Achard syndrome
- Acrofacial dysostosis Cincinnati type
- Acrofacial dysostosis Rodriguez type
- Acrofacial dysostosis, Catania type
- Acromegaloid facial appearance syndrome
- Adams-Oliver syndrome 2
- Agnathia-otocephaly complex
- ALG1-congenital disorder of glycosylation
- Alveolar capillary dysplasia with pulmonary venous misalignment
- Amish lethal microcephaly
- Andersen–Tawil syndrome
- Aprosencephaly cerebellar dysgenesis
- Arterial tortuosity syndrome
- Arthrogryposis multiplex congenita 1, neurogenic, with myelin defect
- Arthrogryposis multiplex congenita 4, neurogenic, with agenesis of the corpus callosum
- Arthrogryposis multiplex congenita 5
- Arthrogryposis, distal, type 2E
- Autism spectrum disorder due to AUTS2 deficiency
- Autosomal dominant Robinow syndrome 1-3
- Autosomal recessive multiple pterygium syndrome
- Autosomal recessive osteopetrosis 5
- Autosomal recessive Robinow syndrome
- Autosomal recessive spastic paraplegia type 70
- Bailey-Bloch congenital myopathy
- Baller–Gerold syndrome
- Barber-Say syndrome
- Bartsocas-Papas syndrome 1 and 2
- Bohring-Opitz syndrome
- Bowen-Conradi syndrome
- C syndrome
- Camptomelic dysplasia
- Cardio-facio-cutaneous syndrome
- Cat eye syndrome
- Catel-Manzke syndrome
- Cerebro-costo-mandibular syndrome
- Cerebrooculofacioskeletal syndrome 1-4
- CHARGE association
- Chondrodysplasia Blomstrand type
- Chondrodysplasia with joint dislocations, gPAPP type
- Cleidocranial dysostosis
- Coffin-Siris syndrome 6 and 12
- COG1 congenital disorder of glycosylation
- COG7 congenital disorder of glycosylation
- COG8-congenital disorder of glycosylation
- Cohen syndrome
- Cold-induced sweating syndrome 1
- Cole-Carpenter syndrome 1
- Complex lethal osteochondrodysplasia
- Congenital contractural arachnodactyly
- Congenital disorder of glycosylation type 1E
- Congenital disorder of glycosylation, type IIr
- Congenital disorder of glycosylation, type IIw
- Congenital lactic acidosis, Saguenay-Lac-Saint-Jean type
- Congenital myasthenic syndrome 19
- Congenital myopathy 20
- Congenital myopathy 22A, classic
- Congenital myopathy 22B, severe fetal
- Cornelia de Lange syndrome 1, 3, and 5
- Costello syndrome
- Cowden syndrome 5 and 6
- Cranioectodermal dysplasia 2 and 3
- Craniofacial microsomia
- Cutis laxa, autosomal recessive, type 1B
- D-2-hydroxyglutaric aciduria 1
- Desmosterolosis
- Developmental and epileptic encephalopathy 64, 77, 80, and 100
- Diamond-Blackfan anemia 1, 6, 10, 14 (with mandibulofacial dysostosis), 15 (with mandibulofacial dysostosis), 21
- Diaphragmatic hernia 4, with cardiovascular defects
- Diarrhea 10, protein-losing enteropathy type
- DiGeorge syndrome
- Distal arthrogryposis types 2B1 and 5D
- DPAGT1-congenital disorder of glycosylation
- Dubowitz syndrome
- Dysosteosclerosis
- Ehlers-Danlos syndrome, classic-like, 2
- Ehlers-Danlos syndrome, dermatosparaxis type
- Ehlers-Danlos syndrome, spondylodysplastic type, 1
- Emanuel syndrome
- Epilepsy, X-linked 2, with or without impaired intellectual development and dysmorphic features
- Fanconi anemia complementation groups L and P
- Faundes-Banka syndrome
- Feingold syndrome type 1
- FG syndrome 1
- Fibrochondrogenesis 2
- Fibromuscular dysplasia, multifocal
- Fontaine progeroid syndrome
- Frank-Ter Haar syndrome
- Fraser syndrome 3
- Galloway-Mowat syndrome 1, 2 (X-linked), 3, and 7
- GAPO syndrome
- Gaucher disease perinatal lethal
- Genitopatellar syndrome
- Gordon syndrome
- Granulocytopenia with immunoglobulin abnormality
- Greenberg dysplasia
- Hajdu-Cheney syndrome
- Hallermann-Streiff syndrome
- Hamartoma of hypothalamus
- Hereditary spastic paraplegia 23
- Holoprosencephaly 13, X-linked
- Hutchinson-Gilford syndrome
- Hydrolethalus syndrome 1 and 2
- Immunodeficiency 49
- Immunodeficiency-centromeric instability-facial anomalies syndrome 1
- Infantile neuroaxonal dystrophy
- Infantile-onset X-linked spinal muscular atrophy
- Intellectual developmental disorder, autosomal dominant 64, 65, and 70
- Intellectual disability, autosomal dominant 1
- Intellectual disability, X-linked 61
- Intellectual disability, X-linked syndromic, Turner type
- Intellectual disability, X-linked, syndromic, Bain type
- Isolated cleft palate
- Isolated congenital hypoglossia/aglossia
- Isolated Pierre-Robin syndrome
- Isotretinoin-like syndrome
- Kabuki syndrome
- Keppen-Lubinsky syndrome
- Knobloch syndrome 2
- Langer-Giedion syndrome
- Larsen-like syndrome, B3GAT3 type
- Lateral meningocele syndrome
- Legius syndrome
- Lethal congenital contracture syndrome 1, 2, 7, and 9
- Lethal Kniest-like syndrome
- Lethal multiple pterygium syndrome
- Lissencephaly 7 with cerebellar hypoplasia
- Liver disease, severe congenital
- Loeys-Dietz syndrome 1 and 2
- Lymphatic malformation 6
- Mandibuloacral dysplasia progeroid syndrome
- Mandibuloacral dysplasia with type A lipodystrophy
- Mandibuloacral dysplasia with type B lipodystrophy
- Mandibulofacial dysostosis with alopecia
- Mandibulofacial dysostosis-microcephaly syndrome
- Marbach-Rustad progeroid syndrome
- Marden-Walker syndrome
- Marfan syndrome
- Marshall syndrome
- Matthew-Wood syndrome
- Mayer-Rokitansky-Küster-Hauser syndrome type 2
- Meckel syndrome 13 and 14
- Meckel syndrome, type 1
- Megalocornea-intellectual disability syndrome
- Melnick-Needles syndrome
- Menke-Hennekam syndrome 1 and 2
- Microcephalic osteodysplastic primordial dwarfism, type 3
- Microcephalic primordial dwarfism due to ZNF335 deficiency
- Microcephaly 13, primary, autosomal recessive
- Microcephaly 16, primary, autosomal recessive
- Microcephaly 2, primary, autosomal recessive, with or without cortical malformations
- Microcephaly 4, primary, autosomal recessive
File:Osseous Deformity Case 6.jpg
- Microcephaly, normal intelligence and immunodeficiency
- Microphthalmia, syndromic 12
- Miller syndrome
- Mohr syndrome
- Mucolipidosis type II
- Mucopolysaccharidosis, MPS-I-H/S
- Multiple congenital anomalies-hypotonia-seizures syndrome 1 and 2
- Myofibrillar myopathy 8
- Nager syndrome
- NEK9-related lethal skeletal dysplasia
- Nemaline myopathy 9
- Neonatal pseudo-hydrocephalic progeroid syndrome
- Nephrotic syndrome, type 11
- Nestor-Guillermo progeria syndrome
- Neu-Laxova syndrome 1 and 2
- Neuropathy, congenital hypomyelinating, 3
- Noonan syndrome 1, 2, and 13
- Oculodentodigital dysplasia, autosomal recessive
- Ogden syndrome
- Orofacial cleft 13
- Orofacial-digital syndrome IV
- Orofaciodigital syndrome types 6 and 14
- Osteogenesis imperfecta types 3, 10, 12, and 18
- Osteopathia striata with cranial sclerosis
- Oto-palato-digital syndrome, type II
- Otospondylomegaepiphyseal dysplasia, autosomal recessive
- Pallister-Killian syndrome
- Paris-Trousseau thrombocytopenia
- Periventricular nodular heterotopia 7
- Perlman syndrome
- Peroxisome biogenesis disorder 10A (Zellweger)
- Peroxisome biogenesis disorder 13A (Zellweger)
- Peroxisome biogenesis disorder 1A (Zellweger)
- Peroxisome biogenesis disorder 2A (Zellweger)
- Peroxisome biogenesis disorder 5A (Zellweger)
- PGM1-congenital disorder of glycosylation
- Phelan-McDermid syndrome
- Pierre Robin sequence with pectus excavatum and rib and scapular anomalies
- Pierre Robin syndrome-faciodigital anomaly syndrome
- Poikiloderma with neutropenia
- Polymicrogyria with or without vascular-type Ehlers-Danlos syndrome
- Pontocerebellar hypoplasia types 2E, 7, and 12
- Potocki-Lupski syndrome
- Prolidase deficiency
- Pyknodysostosis
- RAB23-related Carpenter syndrome
- Renpenning syndrome
- Restrictive dermopathy 1
- RFT1-congenital disorder of glycosylation
- Rhizomelic chondrodysplasia punctata types 1 and 2
- Ritscher-Schinzel syndrome 1 and 3
- Roberts-SC phocomelia syndrome
- Robinow syndrome, autosomal recessive 2
- Rothmund-Thomson syndrome type 2
- Rubinstein-Taybi syndrome due to 16p13.3 microdeletion
- Rubinstein-Taybi syndrome due to CREBBP mutations
- Rubinstein-Taybi syndrome due to EP300 haploinsufficiency
- Schwartz-Jampel syndrome type 1
- Seckel syndrome 1, 2, 5, 8, and 9
- SHORT syndrome
- Shprintzen-Goldberg syndrome
- Silver-Russell syndrome 1 and 2
- Smith-Lemli-Opitz syndrome
- Spinal muscular atrophy, lower extremity-predominant, 2b, prenatal onset, autosomal dominant
- Splenogonadal fusion-limb defects-micrognathia syndrome
- Spondyloepimetaphyseal dysplasia with joint laxity, type 1, with or without fractures
- Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome
- Squalene synthase deficiency
- SSR4-congenital disorder of glycosylation
- Stickler syndrome types 1 and 2
- Stromme syndrome
- Syndromic X-linked intellectual disability Claes-Jensen type
- Syndromic X-linked intellectual disability Najm type
- Tetraamelia syndrome 1 and 2
- Thickened earlobes-conductive deafness syndrome
- Toriello-Carey syndrome
- Treacher Collins syndrome
- Ventriculomegaly and arthrogryposis
- Vici syndrome
- Whistling face syndrome, recessive form
- Wiedemann-Steiner syndrome
- X-linked intellectual disability with marfanoid habitus
- Yunis-Varon syndrome
- Zaki syndrome
Diagnosis
It can be detected by the naked eye as well as dental or skull X-Ray testing.{{citation needed|date=April 2012}}
Treatments
Micrognathia can be treated by surgery and modified eating methods.{{medical citation needed|date=August 2023}} Early detection of the problem and monitoring as the problems grows can help understand it better and find the most effective treatment procedure.
See also
References
{{Reflist}}
External links
{{Medical resources
| DiseasesDB = 22641
| ICD10 = {{ICD10|K|07|0|k|00}}
| ICD9 = {{ICD9|524.04}}
| ICDO =
| OMIM =
| MedlinePlus = 003306
| eMedicineSubj =
| eMedicineTopic =
| MeshID = D008844
}}
- {{cite web| url=https://www.nlm.nih.gov/medlineplus/ency/article/003306.htm| title=Micrognathia| date=12 May 2009| publisher=Medline Plus| access-date=21 May 2011}}
{{Dentofacial anomalies and jaw disease}}