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It can also be made if the person has a family member or relative with the disease. Possibly, antenatal ultrasound can detect macrocephaly, and a high-resolution ultrasound can detect polydactyly and syndactyly. There are a lot of differential diagnoses, including over 100 syndromes and disorders that can cause polydactyly.
Polydactyly also occurs in modern extant reptiles [82] and amphibians. [83] Polydactyly was a non-pathological, reacquired condition in extinct marine reptiles such as ichthyosaurs and hupehsuchians , some of which containing upwards of ten digits within their flippers.
The main characteristics of the syndrome are extra fingers and/or toes (polydactyly), with the skin between some fingers or toes potentially fused or "webbed" (cutaneous syndactyly), and a benign mass or lesion in the brain called a hypothalamic hamartoma. [5]
Synpolydactyly is a combination of syndactyly and polydactyly. This image shows the hand morphology of an individual with polydactyly. SPD is inherited in an autosomal dominant pattern, meaning that an individual only needs to inherit one copy of the affected gene, also known as an allele, from either parent to potentially develop the condition.
Meckel-Gruber syndrome is a rare, lethal ciliopathic genetic disorder, characterized by renal cystic dysplasia, central nervous system malformations (occipital encephalocele), polydactyly (postaxial), hepatic developmental defects, and pulmonary hypoplasia due to oligohydramnios. [1] [2] Meckel–Gruber syndrome is named for Johann Meckel and ...
This image looks very srange to me (besides the polydactyly obviously!)(though, I am definitely not a doctor familliar with the latest x-ray quality so....). Has this image been digitally altered? Why is the skin so clearly visible? I can even see folds in the skin near the thumb and details of the fingernail!
Polysyndactyly is a congenital anomaly, combining polydactyly and syndactyly, in which affected individuals have an extra finger or toe that is connected, via fusing or webbing, to an adjacent digit. [ 1 ] [ 2 ]