To the Editor.
—The Noonan syndrome is a rather new congenital syndrome,1,2 transmitted on an autosomal dominant basis. It comprises several clinical abnormalities: prominent facial appearance, congenital heart lesions, and shortness of stature, as well as other skeletal abnormalities, webbed neck, renal anomalies, and often impaired intellect.3 Different cases have a wide variety of combinations of these abnormalities. However, to my knowledge, there is no previous record of the hyperextensibility of finger joints, although cubitus valgus seems to be common.4
Report of a Case.
—A 55-year old woman visited our clinic several times because of rhythm disturbances and chest pains. She had been catheterized because of obstructive hypertrophic cardiomyopathy. The patient had several typical findings of the Noonan syndrome: short stature (150 cm), exophtalmus, hypertelorism, strabismus, ptosis, webbed neck, low-set ears, saddle nose, sternal deformity, and variations in the size of cervical vertebrae. In addition to this,
Pohjola-Sintonen S. Noonan Syndrome and Hyperextensible Finger Joints. Arch Intern Med. 1985;145(1):179–180. doi:https://doi.org/10.1001/archinte.1985.00360010227049
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