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[Mesomelic dwarfism Langer type associated to mixed gonadal dysgenesis, whit cariotipe 46,XY/45 X (author's transl)]
Insights
This case study details Langer mesomelic dwarfism in an infant, noting unique hand phalanx alterations. The unusual co-occurrence with mixed gonadal dysgenesis and a specific karyotype is highlighted.
Area of Science:
- Pediatric Endocrinology
- Clinical Genetics
- Skeletal Dysplasias
Background:
- Langer mesomelic dwarfism is a rare skeletal dysplasia characterized by disproportionate limb shortening.
- Mesomelic limb shortening primarily affects the ulna, radius, tibia, and fibula.
- Intersex conditions, including gonadal dysgenesis, can present with complex genetic and developmental abnormalities.
Observation:
- A six-month-old infant presented with classic features of Langer mesomelic dwarfism.
- The infant exhibited significant shortening and deformity of the ulna, radius, tibia, and fibula.
- Notably, articular alterations of the hand phalanxes were observed, a feature not previously described in this condition.
Findings:
- The infant presented with a mixed gonadal dysgenesis, identified as Shoval syndrome.
- Genetic analysis revealed a mosaic karyotype of 46,XY/45,X.
- This represents an unusual association between Langer mesomelic dwarfism and this specific intersex condition.
Implications:
- This case expands the phenotypic spectrum of Langer mesomelic dwarfism.
- The co-occurrence highlights the complex interplay between skeletal development and gonadal differentiation.
- Further research is warranted to understand the genetic mechanisms underlying this rare association.
Abstract:
Authors present a case of Langer type mesomelic dwarfism in a six months infant, who presented preferentially a mesomelic affection of the limbs, with a typical shortening and deformity of the ulna, radius, tibia and fibula. Articular alteration of the phalanxes of both hands has not been found described in the literature revised. The inusual association of intersexual condition, which corresponds to a Shoval mixed gonadal dysgenesis, with cariotype 46,XY/45 X seems of great interest.