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At least 19 recordsLinked to original sources

Phocomelia, oligodactyly, and acrania: the Schinzel-Phocomelia syndrome.

We report on a girl born with phocomelia of both lower limbs, with 3-toed feet and partial sacral agenesis. She had normal growth of the upper limbs and trunk, and normal intelligence. Ultrasound study performed during the subsequent pregnancy documented a large skull defect with an intact brain. Fetal autopsy following the termination of that pregnancy was not done. We think this is a further report of the phocomelia syndrome with additional anomalies as reported by Schinzel [Hum Genet 84:539-541, 1990].

Abnormalities, Multiple↗

Phocomelia, ectrodactyly, skull defect and urinary system anomaly: Schinzel-phocomelia syndrome?

This report describes a girl with phocomelia of the right upper limb, ectrodactyly, sacral hypoplasia and a large skull defect, but with normal growth and mental development. Ultrasonography and intravenous pyelography showed bilateral hydronephrosis and dilated ureters. We conclude that this patient may represent Schinzel-phocomelia syndrome with additional urinary tract anomalies.

Abnormalities, Multiple↗

Limb/pelvis hypoplasia/aplasia with skull defect (Schinzel phocomelia): distinctive features and prenatal detection.

Schinzel phocomelia syndrome is characterized by limb/pelvis hypoplasia/aplasia: specifically, intercalary limb deficiencies and absent or hypoplastic pelvic bones. The phenotype is similar to that described in a related multiple malformation syndrome known as Al-Awadi/Raas-Rothschild syndrome. The additional important feature of large parietooccipital skull defects without meningocele, encephalocele, or other brain malformation has thus far been reported only in children with Schinzel phocomelia syndrome. We recently evaluated a boy affected with Schinzel phocomelia born to nonconsanguineous healthy parents of Mexican origin. A third-trimester fetal ultrasound scan showed severe limb deficiencies and an absent pelvis. The infant died shortly after birth. Dysmorphology examination, radiographs, and autopsy revealed quadrilateral intercalary limb deficiencies with preaxial toe polydactyly; an absent pelvis and a 7 x 3-cm skull defect; and extraskeletal anomalies including microtia, telecanthus, micropenis with cryptorchidism, renal cysts, stenosis of the colon, and a cleft alveolar ridge. A normal 46,XY karyotype was demonstrated, and autosomal recessive inheritance was presumed on the basis of previously reported families. This case report emphasizes the importance of recognizing severe pelvic and skull deficiencies (either post- or prenatally) in differentiating infants with Schinzel phocomelia from other multiple malformation syndromes that feature intercalary limb defects, including thalidomide embryopathy and Roberts-SC phocomelia.

Abnormalities, Multiple↗

DK phocomelia phenotype (von Voss-Cherstvoy syndrome) caused by somatic mosaicism for del(13q).

DK phocomelia (von Voss-Cherstvoy syndrome) is a rare condition characterized by radial ray defects, occipital encephalocoele, and urogenital abnormalities. Lubinsky et al. [1994: Am J Med Genet 52:272-278] pointed out similarities between this and the del(13q) syndrome. To date, all reported cases of DK phocomelia have been apparently normal chromosomally. We report on a case of DK phocomelia in which the proposita had normal lymphocyte chromosomes, but was mosaic in fibroblasts for del(13)(q12). Fibroblast chromosomes studies on other cases of DK phocomelia have not been reported: this raises the possibility that some cases of DK phocomelia may be somatic mosaics for del(13)(q12).

Adult↗

[Newborn with phocomelia and thrombocytopenia. Case report].

Associated malformations and symptoms may be decisive in the differential diagnosis of neonatal phocomelia. We report on a neonate with phocomelia, petechiae and thrombocytopenia. This constellation is typical for the phocomelia-thrombocytopenia-syndrome, a variant of the thrombocytopenia-absent radius-(TAR) syndrome. During the neonatal period platelet transfusions were necessary. Relevant bleeding and development delays were not evident until the age of seven months. Cardinal symptoms of the TAR syndrome are bilaterally absent radius and neonatal thrombocytopenia. The patient presented with phocomelia of the upper extremities which occurs in only 5 - 10 % of the patients with TAR syndrome. Further abnormalities include additional bone and joint disorders and haematopoietic problems, such as thrombocytopenia. Bleeding episodes mainly occur in the first year of life, hence platelet transfusions may be necessary during this period. A new experimental approach is the Interleukin-6-mediated stimulation of thrombopoiesis. Usually platelet counts reach normal values in adults. The main problem remains a satisfactory management of various limb defects.

Abnormalities, Multiple↗

Zimmer phocomelia: delineation by principal coordinate analysis.

We present a 46,XX stillborn fetus with tetraphocomelia, absence of ears, severe hypoplasia of nose, cleft palate, pulmonary hypoplasia, imperforate anus and vagina, and phallus-like structure on an otherwise undefined perineum. The pattern of abnormalities resembles the tetraphocomelic condition described by Zimmer et al. in 1985. Tetraphocomelia, ear/nose hypoplasia with facial clefts, pulmonary hypoplasia, and defects of the caudal end including imperforate anus, and abnormal genitalia constitute a distinct pattern of malformation termed Zimmer phocomelia. Principal coordinate analysis with Gower's similarity index supported the clinical impression that cases reported by Zimmer and the present case are distinct from other phocomelic conditions. Although Zimmer phocomelia is currently referred to as "X-linked amelia," documentation of a female case with a penis-like structure in this report as well as consanguinity in the original family in Zimmer's report indicates that this condition is likely inherited in an autosomal recessive fashion. Zimmer phocomelia may be a more appropriate name than X-linked amelia.

Abnormalities, Multiple↗

SC phocomelia syndrome, premature centromere separation, and congenital cranial nerve paralysis in two sisters, one with malignant melanoma.

Two middle age sisters had most manifestations of the SC phocomelia syndrome including postnatal growth retardation, symmetric limb deficiencies with radial aplasia and absent thumbs, facial anomalies with microcephaly, microphthalmia, hypoplastic nasal alae, and borderline to mild mental retardation. Unusual findings included congenital paralysis of some cranial nerves in both patients and malignant melanoma in the proposita. Cultured lymphocytes from both patients, and skin fibroblasts, Epstein Barr virus-transformed lymphocytes, and tumor cells from the proposita demonstrated premature separation of centromeric heterochromatin (PCS) of many chromosomes, a finding noted previously in the SC phocomelia syndrome and the similar but more severe Roberts syndrome. Extensive overlap of the phenotypes of the sisters and 15 other patients with either syndrome and PCS confirms that these are either allelic conditions or the same disease--designated Roberts-SC phocomelia syndrome. The role of PCS in the syndrome(s) remains uncertain since some patients with the characteristic clinical phenotypes are reported to lack it.

Adult↗

Prenatal detection of Roberts-SC phocomelia syndrome: report of 2 sibs with characteristic manifestations.

We describe 2 sibs with Roberts-SC phocomelia syndrome. Although an ultrasound scan performed at 13 weeks of gestation failed to identify specific abnormalities, repeat scan at 17 weeks detected tetraphocomelia. Ultrasonography can reliably detect Roberts-SC phocomelia prenatally; however, serial scans may be needed. Postmortem examination of the proposita confirmed the sonographic findings and also disclosed dysplastic kidneys and ovarian dysgenesis. The degree of phenotypic variation observed between the sibs supports the hypothesis that Roberts syndrome and SC phocomelia represent a single genetic entity.

Abnormalities, Multiple↗

Phocomelia and additional anomalies in two sisters.

Two daughters of non-consanguineous normal parents had phocomelia of both lower extremities with 4-toed feet. The older sister also had phocomelia of the left upper extremity with 5 finger rays; she died immediately after birth. Autopsy disclosed a congenital diaphragmatic hernia, common mesentery and agenesis of the gallbladder, and normal female genitalia. In addition, the younger sister showed a bony skull defect, diastasis recti, agenesis of the uterus and agenesis or atresia of the vagina, hypoplasia of the sacrum and hypo/dysplasia of the pelvic bones. Her growth and mental development were normal. The patterns of anomalies of the two sisters do not fit into any of the syndromes featuring phocomelia; there was no prenatal exposure to thalidomide or any other possible teratogen.

Abnormalities, Multiple↗

Cyclophosphamide-induced apoptosis induces phocomelia in the mouse.

Phocomelia (absence of upper fore and/or hind limbs) was induced in mouse fetuses using cyclophosphamide. On day 11 of gestation, pregnant mice were injected intraperitoneally with 10 ml/kg of saline containing cyclophosphamide (CP) at a dosage of 20 mg/kg body weight. On day 18, the fetuses were removed by Caesarean section from dams given CP on day 11 and were examined for external anomalies. Of 22 fetuses from CP-treated dams, 13 were dead or absorbed, but the surviving 9 fetuses were found to have phocomelia with various other external anomalies. In order to examine the direct cytotoxic effect of CP on fetal limb buds, fetuses were removed at 8, 16, 24, and 48 h after CP administration on day 11, revealing the presence of frequent pyknotic nuclei and apoptotic bodies in hematoxylin and eosin (H & E) preparations. Cell-nuclei and apoptotic bodies were frequently observed by nick end-labeling in limb buds. Transmission electron microscopy demonstrated the typical changes of apoptosis. DNA extracted from the fetal limb buds submitted to CP was analysed by agarose gel electrophoresis, showing the ladder pattern characteristic of internucleosomal cleavage. These findings suggest that cyclophosphamide causes apoptosis in mouse fetal limb buds and that this process induces the external anomalies of phocomelia.

Animals↗

Symmetrical upper limb peromelia and lower limb phocomelia associated with a de novo apparently balanced reciprocal translocation: 46,XX,t(2; 12)(p25.1;q24.1).

We report a female fetus of 20 weeks gestation with severe symmetrical deformity affecting all four limbs. These deformities were unusual in that there was upper limb peromelia and lower limb phocomelia. No additional major malformations were identified on postmortem examination. In particular there was no evidence of splenogonadal fusion or micrognathia and hypoglossia. The limb malformations in this case are associated with a de novo apparently balanced reciprocal translocation 46,XX,t(2;12)(p25.1;q24.1). The cytogenetic features of Roberts-SC phocomelia syndrome were not detected. Unfortunately, the fibroblast line died and no FISH or DNA analysis could be carried out. In spite of this, the case is presented as it may be useful to other researchers in the selection of candidate genes for mendelian forms of peromelia and phocomelia.

Amniocentesis↗

Association of ectrodactyly and distal phocomelia.

Ectrodactyly and phocomelia are well known limbs malformations. They can be a part of various syndromes, and are more often transmitted with dominant autosomal Inheritance with variable expression and Incomplete penetrance. Different loci have been Identified for ectrodactyly (SHFM1 at 7q21.3q22.1, SHFM2 at Xq26, SHFM3 at 10q24q25, SHFM4 at 3q27), and two genes are known (DSS1 for SHFM1, p63 for SHFM4). We report the case of a 33 year-old female affected with the association of ectrodactyly and phocomelia. It could be a "new" association, or a mild or partial expression of the syndrome Including ectrodactyly, phocomelia, deafness and sinusal arythmia.

Abnormalities, Multiple↗

[Roberts-SC phocomelia syndrome: cytogenetic findings and clinical variability in three brothers].

Three sibs with Roberts syndrome SC-phocomelia are presented. The first one, a nine years old girl, with a malformative syndrome consistent with SC-phocomelia: symmetrical reductive malformations of the upper limbs; flexion contractures of both knee joints; multiple minor anomalies, including hemangioma of the face, hypoplastic nose, dysplastic ears and scanty, silvery blond hair; intrauterine and extrauterine growth retardation; psychomotor and mild mental retardation. Cytogenetic study reveals a centromeric abnormality consistent with an unusual sister chromatid disjunction in all metaphases, that can also be a useful tool in prenatal diagnosis. Next two sibs were males and offspring of a twin pregnancy and were found to have a malformative syndrome consistent with Roberts syndrome: low birth weight; dysplastic ears; hypertelorism, exophthalmos and cloudy corneas; bilateral cleft lip and cleft palate; severe reductive defects in both upper limbs and only syndactylia in the lower ones. Both sibs died soon after delivery. Autosomic recessive pattern of inheritance of this disorder, presentation in the same sibship of Roberts and SC-phocomelia syndromes, as different degrees of expression of the same disorder, and relationship of cytogenetic findings with cell division are discussed.

Child↗

Phocomelia: report of three cases.

Three infants were born with phocomelia in Winnipeg during the period from May 1961 to May 1962. In one case thalidomide had been administered to the mother early in the pregnancy. No etiological agent was discovered in the other two, both of whom died. Known teratogenic agents capable of causing phocomelia are reviewed, but no clear association with the two cases described in this report is evident.

Death↗

Cytogenetic findings in Roberts-SC phocomelia syndrome(s).

Roberts syndrome and SC phocomelia syndrome are an autosomal recessive condition of prenatal and postnatal growth retardation, symmetrical limb reduction, and craniofacial abnormalities. A distinction has been made between the two syndromes on the basis of relative severity of these manifestations. Where chromosome studies have been carried out, most have been reported as normal. However, there have been two reports of consistent centromere abnormalities; one in a patient with SC phocomelia (pseudothalidomide syndrome), the other in a patient with Roberts syndrome. Four patients with similar phenotypic manifestations have recently been shown in our laboratory to have the same centromere puffing and splitting. These four patients had other clinical manifestations in common, including bilateral corneal opacities, microcephaly, absence of radii, limited extension at knees and elbows, apparent enlargement of the phallus, and survival beyond the neonatal period.

Abnormalities, Multiple↗

The SC phocomelia syndrome: report of two cases with cytogenetic abnormality.

We report two sibs with the SC phocomelia syndrome with typical facial appearance and bilateral absence or extreme hypoplasia of the fibula, radius, and thumb. One sib had bilateral humero-ulnar and femoro-tibial synostosis (absence of the elbow and knee joints). Application of the nosologic criteria of Herrmann and Opitz showed that there was no significant intrafamilial variation in phenotype. Chromosome analyses in both patients showed heterochromatic puffing and centromere separation involving many chromosomes, an observation that has previously been reported in patients with SC phocomelia and Roberts syndromes. More important, this finding will have significance in prenatal detection of a certain proportion of cases with these syndromes without resorting to the use of radiographic examinations.

Adolescent↗