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Relationship between lower-lip fistulae and cleft lip and/or palate in Von der Woude syndrome
M A Onofre1, H B Brosco, R Taga
1Department of Diagnosis and Surgery, Dental School of Araraquara, University of the State of São Paulo (UNESP), Brazil.
Objective:
This study was conducted to evaluate the relationship between fistulae of the lower lip and cleft lip and/or palate in patients with Van der Woude syndrome.
Methods:
The medical records of 11,000 patients with cleft lip and/or palate registered at the Cleft Lip-Palate Research and Rehabilitation Hospital, University of São Paulo, Bauru were reviewed. Of these patients, 133 (1.2%) presented with Van der Woude syndrome.
Results:
Of the 133 patients, 88 (66.2%) exhibited full clefts, 22 (16.5%) only cleft lip, and 23 (17.3%) only cleft palate. The lower-lip fistulae observed in these 133 patients were bilateral symmetric in 66 (49.7%), bilateral asymmetric in 42 (31.6%), microform in 19 (14.3%), median in 5 (3.8%), and unilateral in 1 (0.7%).
Conclusion:
This population sample appears to exhibit the previously published tendency for bilateral, unilateral, or mixed-type congenital fistulae to be associated with cleft lip with or without cleft palate, while so-called microforms or conic elevations are almost exclusively associated with cleft palate.