Oculo-cerebro-cutaneous syndrome: first description in an adult

Oculocerebrocutaneous and encephalocraniocutaneous lipomatosis syndromes: blind men and an elephant or separate syndromes?

The discovery of relevant causative genes has subdued the lumping versus splitting debate with respect to a growing number of syndromes. However, it remains paramount to define unknown genesis syndromes as precisely and appropriately as possible in order to provide accurate prognosis and to facilitate future research. The presentation of a 14-month-old girl, of normal intelligence, who had a colobomatous right eye with cyst, minor intracranial MRI variants, and an area of sparse scalp hair containing a 1 by 1.5 cm, soft, domed, and indented skin lesion suggested a diagnosis of mild oculocerebrocutaneous syndrome (OCCS). An initial exploration of the literature exposed the extreme variability in cases that have been reported as OCCS, and emphasized its possible relationship to encephalocraniocutaneous lipomatosis (ECCL), thus challenging the initial diagnosis. Cases reported, or discussed by others, as possible OCCS (40) and ECCL (44) were reviewed as completely as possible in an effort to determine whether diagnostic criteria could be developed for these syndromes, and to see whether or not evidence favored their continued separation as two syndromes. The approach used was to summarize the data for all cases, to select major and minor diagnostic criteria on the basis of the relative specificity and/or frequency of a sign, to then apply the criteria in a standard fashion and to review the outcome to see if the classification of cases made clinical sense, and to make appropriate adjustments. The criteria were not chosen so as to separate the syndromes and in some instances the same criteria could apply to either syndrome. An approach is outlined for handling reports of patients that purport to be variants or to expand the spectrum of a syndrome, and in the case of OCCS and ECCL this resulted in most such examples being excluded. Application of diagnostic criteria suggests that OCCS and ECCL are distinct, and that some case reports, including some purporting to expand the spectrum of OCCS, should be excluded, at least until such time as the etiology of these conditions is known and those cases can be tested. These diagnostic criteria were developed on the basis of literature reports that varied in their quantity and quality of detail. Furthermore, in many cases reliance had to be placed on copies of original studies with resultant degradation of photographic information. Modern ocular imaging, and histopathology of eye and skin malformations, will often clarify the specific nature of a malformation and, therefore, define exact diagnostic criteria and leave fewer uncertain cases. In the absence of anomalies in those systems, or if histopathology or appropriate imaging is unavailable, the diagnosis in some cases will continue to remain uncertain; this is not an argument for lumping the syndromes.

Severe oculocerebrocutaneous (Delleman) syndrome: overlap with Goldenhar anomaly

Oculocerebrocutaneous syndrome (OCCS), or Delleman syndrome, is a multiple congenital anomaly syndrome characterized by orbital cysts, cerebral malformations, and focal dermal hypoplasia [Delleman and Oorthuys, 1981, Clin Genet 19:191-198; Delleman et al., 1984, Clin Genet 25:470-472]. Two previous reports presented children having what is suggested as the more severe form of the OCCS syndrome who also had anophthalmia, congenital hydrocephalus, and cleft lip and palate [Leichtman et al., 1994, Am J Med Genet 50:39-41; Angle and Hersh, 1997, Am J Med Genet 68:39-42]. We report on a third case of severe OCCS, an infant girl with a similar constellation of findings and additional anomalies including lateral facial cleft, vertebral anomaly, and ventricular septal defect. The additional findings in our patient highlight the phenotypic overlap of OCCS and the Goldenhar anomaly, an overlap previously noted by Delleman and Oorthuys [1981], and others [Al-Gazali et al., 1988, J Med Genet 25: 773-778]. We suggest that the minimal diagnostic criteria for Delleman syndrome include central nervous system cyst or hydrocephalus, orbital cysts or microphthalmia, and focal skin defects.