[Nasal dermoid and sinus cysts in patients with cleft malformations].

BACKGROUND: Nasal dermoid sinus cysts are uncommon congenital lesions. They are usually isolated occurrences and are not associated with syndromes or additional malformations. The coincidence of both, cleft malformations and nasal dermoid sinus cysts, has seldom been reported. CASE REPORTS: Within the last 2 years two patients with reconstructed cleft lip and palate and additional nasal dermoid sinus cysts underwent surgical removal. One patient with bilateral complete cleft lip exhibited a fistula from the medial third of the nasal dorsum up to the glabella. Another patient with unilateral cleft lip and Peters' plus syndrome had undergone removal of a nasal dermoid sinus cyst 12 years ago and was referred for management of recurrent disease. DISCUSSION: Concerning the common cleft-dependent nose malformations with no midline nasal masses, there are reasons for the assumption that a coincidence of both anomalies might be accidental. Especially in Peters' plus syndrome no frequent occurrence of nasal dermoids has thus far been documented. However, the proximity and temporal closeness of an embryological pathway of the frontonasal region and lip development could also argue for a unique formation of both lesions. Complete surgical removal and plastic reconstruction simultaneously or in a second step are recommended.