Marshall–Smith syndrome
Medical condition
From Wikipedia, the free encyclopedia
Marshall-Smith syndrome, discovered in 1971 (Marshall, Graham, Scott, Boner, & Smith), is characterized by unusual accelerated skeletal maturation (usually starting before birth) and symptoms like conspicuous physical characteristics, respiratory difficulties, and intellectual disability. Cases described in the literature show a clinical variability regarding related symptoms. For instance, respiratory difficulties are ranging from absent to severe difficulties.[1]
| Marshall-Smith syndrome | |
|---|---|
| Other names | Greig's syndrome, Polysyndactyly cephalopolysyndactyly syndrome, Accelerated skeletal maturation, Marshall-Smith type, Marshall–Smith–Weaver syndrome |
Presentation
The syndrome is a rare clinical disorder.[2]
- Physical
- Radiologic examination
- Mental
- Often associated with intellectual disability (of variable degree)[3]
Genotype
The first gene - NFIX - that could cause the syndrome has been identified.[5] This gene is located on the short arm of chromosome 19 (19p13.1).[citation needed]
Diagnosis
- Clinical course
- Respiratory difficulties (like upper airway obstruction.[6] (Note regarding clinical variability: respiratory difficulties might be absent.[3])
- Pneumonia[4]
- Failure to thrive[4]
- Psychomotor retardation[4]
Respiratory complications are often cause of death in early infancy.[2]
Differential diagnosis
Marshall–Smith syndrome is not to be confused with:
Terminology
Translated
- English: Marshall–Smith syndrome
- Español: Síndrome de Marshall–Smith
- Français: Le syndrome de Marshall–Smith
- Italiano: Sindrome di Marshall–Smith
- Nederlands: Marshall–Smithsyndroom, syndroom van Marshall–Smith
- Polski: Zespół Marshalla–Smitha, Zespół Marshalla i Smitha
- Русский: Синдром Маршалла–Смита