VARIABILITY VERSUS HETEROGENEITY IN SYNDROMAL HYPOTHALAMIC HAMARTOBLASTOMA AND RELATED DISORDERS - REVIEW AND DELINEATION OF THE CEREBRO-ACRO-VISCERAL EARLY LETHALITY (CAVE) MULTIPLEX SYNDROME

被引:32
作者
VERLOES, A
GILLEROT, Y
LANGHENDRIES, JP
FRYNS, JP
KOULISCHER, L
机构
[1] STATE UNIV LIEGE, CTR HUMAN GENET, B-4000 LIEGE, BELGIUM
[2] CLIN ST VINCENT, NEONATAL INTENS CARE UNIT, ROCOURT, BELGIUM
[3] INST MORPHOL PATHOL, CTR HUMAN GENET, LOVERAL, BELGIUM
[4] CATHOLIC UNIV LEUVEN, CTR HUMAN GENET, B-3000 LOUVAIN, BELGIUM
来源
AMERICAN JOURNAL OF MEDICAL GENETICS | 1992年 / 43卷 / 04期
关键词
GENITOPALATOCARDIAC SYNDROME; HOLOPROSENCEPHALY POLYDACTYLY SYNDROME; HOLOPROSENCEPHALY SEQUENCE; HYDROLETHALUS SYNDROME; HYPOTHALAMIC HAMARTOMA; LETHAL ACRODYSGENITAL DWARFISM; OROFACIODIGITAL SYNDROME TYPE-VI; PALLISTER-HALL SYNDROME; RUTLEDGE SYNDROME; SMITH-LEMLI-OPITZ SYNDROME TYPE-II; VARADI-PAPP SYNDROME;
D O I
10.1002/ajmg.1320430404
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
We report on a case of neonatal hypothalamic hamartoblastoma with holoprosencephaly, Hirschsprung disease, and tetramelic postaxial polydactyly. Twenty-seven previous cases of congenital hypothalamic embryonic tumours with associated congenital defects are reviewed. A classification in isolated, associated, and syndromal forms is proposed. The difficulties encountered in differential diagnosis between the syndromal form (mainly represented by the Pallister-Hall syndrome) and related diseases as Smith-Lemli-Opitz type II, holoprosencephaly-polydactyly, orofaciodigital type VI and hydrolethalus syndromes are outlined. Two pathogenic mechanisms are discussed: a classical pleiotropic model and single sequence model. The latter is sufficient to delineate syndromal hypothalamic hamartoblastoma. With the former, syndromal hypothalamic hamartoblastoma cannot be clearly recognized in the absence of a CNS tumour, a child with syndromal hypothalamic hamartoblastoma cannot be reliably diagnosed as Pallister-Hall rather than another MCA syndrome, and, ultimately, the existence of Pallister-Hall syndrome could be questioned, as it could only be the extreme expression of one or several other syndromes. As this hypothesis cannot be proven or disproven at this point, the authors suggest creating the concept of multiplex phenotype. "Cerebro-Acro-Visceral Early lethality multiplex syndrome" is suggested to encompass all the ambiguous cases. Within this complex, an operative classification key is proposed.
引用
收藏
页码:669 / 677
页数:9
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