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Cerebral gigantism (Sotos' syndrome). Metacarpophalangeal pattern profiles
Insights
Sotos syndrome impacts finger growth, showing two distinct metacarpophalangeal pattern (MCPP) profiles during development. One profile, seen in most patients, features pronounced finger lengthening around age two.
Area of Science:
- Pediatric Endocrinology
- Genetics
- Skeletal Dysplasias
Background:
- Sotos syndrome is a genetic disorder characterized by overgrowth.
- Understanding skeletal development is crucial for managing Sotos syndrome.
- The metacarpophalangeal pattern (MCPP) profile offers insights into hand and finger growth.
Purpose of the Study:
- To analyze the metacarpophalangeal pattern (MCPP) profile in patients with Sotos syndrome.
- To describe typical MCPP profiles throughout the growth period.
- To identify variations and developmental changes in MCPP profiles in Sotos syndrome.
Main Methods:
- Longitudinal study of 17 patients with Sotos syndrome.
- Assessment of MCPP profiles from 2 weeks to 19 years of age.
- Categorization of MCPP profiles into distinct types based on growth patterns.
Main Results:
- Two typical MCPP profiles were identified in Sotos syndrome patients.
- Profile type 1 (13 patients) showed peak finger lengthening around age 2, with specific metacarpal and phalangeal growth phases.
- Profile type 2 (4 patients) was a less pronounced, mirror image of type 1; one patient transitioned between types, and one had a normal profile.
Conclusions:
- Sotos syndrome exhibits characteristic metacarpophalangeal pattern (MCPP) profiles during growth.
- These profiles provide a quantifiable method to assess skeletal development in Sotos syndrome.
- Further research can explore the genetic and clinical correlations of these distinct MCPP profiles.
Abstract:
The metacarpophalangeal pattern (MCPP) profile in 17 out of 22 patients with Sotos' syndrome was studied throughout the growth period, from 2 weeks to 19 years of age. Two typical MCPP profiles will be described. The first type of profile was found in 13 patients. Although the form of the profile is the same throughout the years, the lengthening of the fingers is most pronounced around 2 years of age. Before and after that period there is a flattening of the curve. The metacarpals are relatively longer below the age of 3 years, above 3 years the lengthening of the proximal phalanges is more pronounced in the profile. The second type of profile was found in 4 patients. This curve is almost a mirror image of the first profile. The fingers are not as long as in the first type and the profile is less pronounced. In one of the 17 patients the transition from the first type to the second type could be demonstrated. One patient had a normal profile.