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Pyle's syndrome
Also known as:
Bakwin-Krida syndrome
Pyle's disease
Pyle-Cohn syndrome
Associated persons:
Harry Bakwin
Max Cohn
Arthur Krida
Edwin Pyle
Description:
A rare congenital syndrome of universal metaphyseal dysplasia affecting both sexes. It is characterised by genua valga, occasional joint pain, muscular weakness, mild scoliosis, limited elbow extension, malocclusion, and increased tendency to fractures. Major x-ray findings include hyperostosis of the cranial vault; obtuse mandibular angle, mandibular prognathism; expansion of the ribs, clavicles, and pubic and ischial bones; metaphyseal flare of the tubular bones, extending into the diaphysis; and Erlenmeyer flask like appearance of the diaphyses in the femur and tibia. No growth retardation or mental deficiency. Inheritance is autosomal recessive.
According to one author, the term Pyle's disease should be limited exclusively to forms not affecting the bones of the cranium. If these, too, are affected, the correct term is dysplasia craniometaphysealis, which may be autosomal dominant or recessive.
Bibliography:
- G. E. Smith, F. W. Jones:
The archeologic survey of Nubia, report for 1907-1908.
Rep Remains Cairo, 1910, 2: 289.
- E. Pyle:
A Case of unusual bone development.
Journal of Bone and Joint Surgery, Boston, 1931, 13-A: 874-876.
- H. Bakwin, A. Krida:
Familial metaphyseal dysplasia.
American Journal of Diseases of Children, Chicago, 1937, 53: 1521-1527.
- M. Cohn:
Konstitutionelle Hyperspongiosierung des Skeletts mit partiellen Riesenwuchs.
Fortschritte auf dem Gebiete der Röntgenstrahlen, 1933, 47: 293.
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