Nonclassical yellow nail syndrome in six-year-old girl: a case report
© Cebeci et al; licensee BioMed Central Ltd. 2009
Received: 19 September 2009
Accepted: 24 October 2009
Published: 24 October 2009
The yellow nail syndrome is usually described as the combination of yellow nails with lymphoedema and often with respiratory manifestations such as pleural effusions, chronic sinusitis and bronchiectasis. The syndrome is most often seen in the middle-aged individuals.
We present a 6-year-old girl with yellow nail syndrome having pansinusitis and bronchiectasis.
The components comprising the classical triad of yellow nail syndrome in children may not necessarily be present altogether. Therefore, yellow nail syndrome should be suspected in children having only typical nail changes.
Yellow nail syndrome (YNS) is a rare clinical entity consisting of dystrophic yellow nails, lymphoedema and pleural effusion [1, 2]. In addition, a significant number of patients also have sinusitis , bronchiectasis , and lower respiratory tract infections . It has been reported that congenital malformations and a secondary dysfunction of lymphatic vessels may be responsible for the syndrome including changes of nail, but its exact mechanism is still not known . The syndrome is most often seen in middle-aged individuals. Here we present a six-year-old girl aside from the classic triad of the syndrome having pansinusitis and bronchiectasis.
A 6-year-old girl presented with thickening and slow-growing nails of both hands and feet, and change in color of nails which had been noted since her birth according to history given by her parents. In her history, there was no known history about sinusitis and bronchiectasis apart from that of recurrent bronchopneumonia attacks. Physical examination revealed lymphadenopathy which was bilateral, submandibular, mobile, and 0.5 cm in size. While expirium was prolonged; bilateral, partial, thin ralles and rhoncus were heard over the lung on inspirium.
The syndrome was initially described in 1964, in a study of thirteen patients with yellow nails and lymphedema . Two years later, Emerson added pleural effusion as a frequent feature of the syndrome. The whole syndrome consist of the classical triad including yellow nails, lymphoedema and pleural effusions with associated respiratory tract involvement . Furthermore, bronchiectasis , and rhinosinusitis  are well recognized respiratory manifestations of this syndrome. YNS may be associated with a number of systemic diseases such as rheumatoid arthritis, thyroiditis, acquired immunodeficiency syndrome, tuberculosis, immunologic disorders, malignancies and mycosis fungoides . YNS is a rare disease and its exact pathogenesis is still not known. The disease is believed to start with congenital lymphatic blood vessel hypoplasia and inadequate lymphatic drainage system  and it is responsible for all the findings including nails. The disease is also considered to have a genetic component, although it has not been proved yet . Although there are not similar findings on the other people in the family of our case, the nail findings were expressed to be present from the birth of the child.
The mean age at onset is 40 years. However, the age of onset varies widely; for example lymphoedema may be present even from the birth until 60's and it rarely affects children. The yellow nails are found in 89%, lympoedema in 80% and pleural effusion in 36% of the cases. These three findings are concurrently seen totally only in one, third of patients . In 1972 it was stated that existance two finding are enough to establish the diagnosis . Moreover, only typical nail changes are enough for the diagnosis of YNS . In most cases, all of 20 nails are affected. The nails are typically yellowish green in color, very slow growing, thickened and excessively curved a long both axes. The cuticle and lanula are usually absent and onycholysis is frequently evident [1, 7, 8]. Our case was a 6-year-old girl and and findings of the nails was said to have been present from the birth onwards.
In 1969 Bower et al. suggested the bronchiectasis as the fourth compenenet. Bronchiectasis is considered as possibly related with the hypoplasia of the bronchial lymphatics in YNS. Pre-exisiting lymphatic anomaly possibly tends to cause recurrent respratory infection and bronchiectasis; and damage caused by recurrent inflamation later predisposes some patients to develop pleural effusion. There was history of having former respiratory infection and we established bronchiectasis. Here, it appeared that bronchiectasis was probably the early manifestation of this syndrome. Since our case is already six years old pleural effusion and lymphoedema are expected to occur later. In 1994 rhinosinusitis may be recognised as part of the syndrome and rhynosinusitis frequency has been reported 83% . She had similar nail findings, pansinusitis and bronchiectasy but had not pleural effusion, lymphedema.
No specific treatment exists for this disorder. The patient was given 300 IU/day vitamin E, for three months but the patient did not respond to treatment. We presented a case with the exception of classical triad.
Written informed consent was obtained from the patient's mother for publication of this case report and accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal.
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