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PubMedDate not supplied

[Multiple spinal meningeal cysts in the thoracic region associated with lymphedema of the legs (Milroy's disease)].

Intraspinal extradural meningeal cysts are uncommon cause of spinal compression. Either the classification or the etiopathology of these changes are indistinct in the literature. A rare case of multiple extradural meningeal cysts associated with lymphedema of the legs is presented. The total surgical removal was followed by the quick neurological improvement. Some etiological, diagnostic and therapeutic aspects of these pathologies have been discussed.

Adult↗
PubMed1995

Lymphangiosarcoma in late-onset hereditary lymphedema: case report and nosological implications.

Hereditary lymphedemas that are not associated with other malformations usually affect the lower limbs and are inherited in an autosomal dominant fashion. These non-syndromic hereditary lymphedemas are categorized by their age of onset, being either congenital (Milroy disease) or having an onset in childhood or around puberty (Meige disease). We describe a family in which three individuals in three generations had unusually late onset of lymphedema in their mid-twenties or thirties. The proband additionally developed a very rare lymphangiosarcoma. This tumor, usually associated with post-mastectomy lymphedema, has not been described in late-onset hereditary lymphedema. Because of an unusually high incidence of multiple primary tumors in association with lymphangiosarcoma in the literature (approximately 10%) and the proband's own familial cancer background, we speculate that an inherited predisposition to malignancy may underlie the development of lymphedema-associated lymphangiosarcoma.

Adult↗
PubMed2006

Familial congenital non-immune hydrops, chylothorax, and pulmonary lymphangiectasia.

Pulmonary lymphangiectasia is an uncommon congenital anomaly, and familial occurrence has rarely been reported. We report on two sibs with bilateral pleural effusion/chylothorax and hydrops who died neonatally. One sib required prenatal intrauterine hemithoracic drainage. Autopsy confirmed congenital pulmonary lymphangiectasia (CPL) histologically in the first case. Hydrops, characterized as subcutaneous edema and effusions in two or more body cavities, may be due to a variety of factors, but the co-occurrence of CPL in one of these sibs, although rare, supports the notion that chylothorax and hydrops may be caused by structural lesions of lymph channels. Although most cases of CPL are sporadic, the reported sibs support autosomal recessive inheritance, with intrafamilial variability of a lymphatic disorder on a genetic basis. Mutations in vascular endothelial growth factor receptor-3 (VEGFR3) in families with Milroy disease, mutations of FOXC2 in the lymphedema-distichiasis syndrome, and fatal chylothorax in alpha9-deficient mice are potential candidate genes.

Abnormalities, Multiple↗
PubMed2002

Prenatal diagnosis of Milroy's primary congenital lymphedema.

Milroy's primary congenital lymphedema (PCL) (hereditary lymphedema type I, Milroy disease) is present at birth, and mostly affects the dorsal aspects of feet. It is mostly a life-long condition but does not affect longevity. Complications are rare except for chronic discomfort and warmness of affected areas. PCL is an autosomal dominant disease with incomplete penetrance due to a mutation in the gene locus encoding for VEGFR3 with resultant dysgenesis of microlymphatic vessels. We report on two fetuses where ultrasonographic examination at 15 weeks of gestation showed significant edema of the dorsal aspects of both feet with no evidence of other major malformations. Whereas in one fetus the edema resolved completely, it persisted in the second fetus and proved after birth to be of lymphedematous nature. To the best of our knowledge, this is the first report of early prenatal diagnosis of primary congenital lymphedema via fetal ultrasonographic examination and of spontaneous resolution of lymphedema during fetal life.

Adult↗
PubMed2006

Wide clinical spectrum in a family with hereditary lymphedema type I due to a novel missense mutation in VEGFR3.

Hereditary lymphedema type I (HL-I), also known as Milroy disease, is an autosomal dominant disorder characterized by typical phenotype of infantile onset lower-limb lymphedema accompanied by variable expression of recurrent episodes of cellulites, toenail changes, and papillomatosis. Mutations in the vascular endothelial growth factor receptor 3 (VEGFR3), also known as FLT4 gene, which encodes a lymphatic endothelial-specific tyrosine kinase receptor, have been identified as a genetic cause of HL-I. We report a large Muslim Arab family residing in northern Israel with 14 individuals presenting clinical features of HL-I. Genetic analysis revealed novel missense mutation E1106K in the tyrosine kinase domain II of VEGFR3 that cosegregates with the disorder in the family. Most affected individuals presented with bilateral congenital lower-limb lymphedema. Wide intrafamilial phenotypic variability included two asymptomatic individuals, a case of prenatal hydrothorax evolving to hydrops fetalis, and a late-onset complication, yet unreported, of chronic degenerative joint disease of the knees. This report broadens the known "classic" phenotype of HL-I.

Adolescent↗
PubMedDate not supplied

Macrodactyly: report of eight cases and review of the literature.

Congenital enlargement of one or several digits of the hands or feet (macrodactyly) is a rare disorder. A considerable proportion of the patients with this condition are referred to dermatology departments. The majority of the cases reported in the literature represent hamartomas with combined hypertrophy of several, predominantly lipomatous, soft tissue components and overgrowth of bone. The differential diagnosis includes Klippel-Trenaunay-Weber syndrome, neurofibromatosis, Milroy disease, and Proteus syndrome. We describe eight cases of congenital macrodactyly, discuss the findings, and propose a simple clinicopathologic terminology.

Adolescent↗
PubMed1999

Mapping of primary congenital lymphedema to the 5q35.3 region.

Primary lymphedema is a chronic tissue swelling, most frequently of the lower limbs, resulting from deficient lymphatic drainage. The variability of the affected phenotype, incomplete penetrance, lack of large families, and possible genetic heterogeneity have hampered the identification of causative genes until now. We carried out a genomewide search, using a four-generation North American family with dominantly inherited primary congenital lymphedema (PCL), otherwise known as "Milroy disease," or "hereditary lymphedema type I" (MIM 153100). Linkage to markers from the 5q35.3 region in this and four additional, British families was established. A minimum of 79 directly scorable haplotypes (37 affected) in five families conspicuously segregated with the most telomeric region of 5q35.3, thus suggesting a major locus for PCL in this vicinity. No recombination was observed with D5S408 (Z = 10.03) and D5S2006 (Z = 8.46) with a combined multipoint score of 16.55. While D5S2073 and WIAF-2213 defined the upper centromeric boundary, no recombinants were obtained for the last telomeric marker of D5S2006. Four unaffected subjects were identified as gene carriers and provided an estimated penetrance ratio of.84 for this condition. A few of the positionally mapped genes in the 5q35 region that may potentially be involved in the etiology of this condition are CANX, FGFR4, HK3, and hnRPH1.

Chromosome Mapping↗
PubMed2003

Mutations in the transcription factor gene SOX18 underlie recessive and dominant forms of hypotrichosis-lymphedema-telangiectasia.

Hereditary lymphedema is a developmental disorder characterized by chronic swelling of the extremities due to dysfunction of the lymphatic vessels. Two responsible genes have been identified: the vascular endothelial growth factor receptor 3 (VEGFR3) gene, implicated in congenital lymphedema, or Milroy disease, and the forkhead-related transcription factor gene FOXC2, causing lymphedema-distichiasis. We describe three families with an unusual association of hypotrichosis, lymphedema, and telangiectasia. Using microsatellite analysis, we first excluded both VEGFR3 and FOXC2 as causative genes; we then considered the murine ragged phenotype, caused by mutations in the Sox18 transcription factor, as a likely counterpart to the human disease, because it presents a combination of hair and cardiovascular anomalies, including symptoms of lymphatic dysfunction. Two of the families were consanguineous; in affected members of these families, we identified homozygous missense mutations in the SOX18 gene, located in 20q13. The two amino acid substitutions, W95R and A104P, affect conserved residues in the first alpha helix of the DNA-binding domain of the transcription factor. In the third family, the parents were nonconsanguineous, and both the affected child and his brother, who died in utero with hydrops fetalis, showed a heterozygous nonsense mutation that truncates the SOX18 protein in its transactivation domain; this substitution was not found in genomic DNA from either parent and hence constitutes a de novo germline mutation. Thus, we show that SOX18 mutations in humans cause both recessive and dominant hypotrichosis-lymphedema-telangiectasia, suggesting that, in addition to its established role in hair and blood vessel development, the SOX18 transcription factor plays a role in the development and/or maintenance of lymphatic vessels.

Amino Acid Sequence↗
PubMed2006

Hereditary lymphedema type I associated with VEGFR3 mutation: the first de novo case and atypical presentations.

Mutations in the vascular endothelial growth factor receptor 3 gene, VEGFR3/FLT4, have been identified in a subset of families with hereditary lymphedema type I or Milroy disease (MIM 153100). Individuals carrying a VEGFR3 mutation exhibit congenital edema of the lower limbs, usually bilaterally and below the knees, sometimes associated with cellulitis, prominent veins, papillomatosis, upturned toenails, and hydrocele. In this study, we report the first de novo VEGFR3 mutation in a patient with sporadic congenital lymphedema. We also describe three other families with a VEGFR3 mutation. In each family, one individual had an atypical clinical presentation of hereditary lymphedema type I, whereas the others had the classical VEGFR3 mutation-caused phenotype. The atypical presentations included pre-natal pleural effusion, spontaneous resorption of lymphedema and elephantiasis. Three of the four identified mutations were novel. These data show that de novo VEGFR3 mutations may be present in patients without family history of congenital lymphedema. This has implications for follow-up care, as such individuals have nearly a 50% risk for occurrence of lymphedema in their children. Our findings also indicate that although most patients with a VEGFR3 mutation have the well-defined phenotype for hereditary lymphedema type I, there are exceptions that should be considered in genetic counseling. Because VEGFR3 mutation can cause generalized lymphatic dysfunction and can thus result in hydrops fetalis, VEGFR3 screening should be added to the investigation of cases of hydrops fetalis of an unknown etiology.

Amino Acid Sequence↗
PubMed2005

Clinical variability in a Japanese hereditary lymphedema type I family with an FLT4 mutation.

Hereditary lymphedema type I (Milroy disease) is a rare autosomal dominant disease resulting from mutations of FLT4 encoding the vascular endothelial growth factor receptor-3. Patients develop edema of the legs and feet, resulting in chronic swelling of the lower extremities from the neonatal period. Here we report a Japanese family with 10 affected members of five generations of hereditary lymphedema type I. We identified a previously reported missense mutation of G857R in one allele of FLT4 from three affected individuals of three generations, the mother of whom presented only hemi-lymphedema of the left foot. Thus, the clinical features of hereditary lymphedema type I caused by a FLT4 mutation are heterogeneous and it would be appropriate to consider FLT4 mutations even in a patient with hemi-lymphedema of the foot.

Family Health↗
PubMed1982

Use of isosulfan blue for identification of lymphatic vessels: experimental and clinical evaluation.

Use of vital dyes for identification of lymphatic vessels before cannulation has heretofore not been approved by the Food and Drug Administration (FDA). The suitability of isosulfan blue, the 2,5 disulfonic acid isomer of Patent Blue, for this purpose was evaluated experimentally in the rat and clinically in 11 volunteers and 543 patients under an investigational new drug application. FDA approval for this drug has been obtained. Volunteers and patients received up to 15 mg of a 1% sterile, pyrogen-free solution per extremity (total dose of 0.4 mg/kg in the average patient). Excellent identification of lymphatic vessels was achieved in 100% of volunteers and in 97.4% of patients. In the other 2.6%, lymphatic vessels were not identified mainly due to congenital lymphatic vascular (Milroy) disease. Baseline blood chemistry in volunteers was not altered after administration of the dye. No adverse reactions were found in volunteers and minimal allergic reactions occurred in less than 1% of patients. Acute toxicity studies demonstrated an LD50 greater than 150 mg/kg in the rat. Isosulfan blue was excreted unchanged in the urine (7%) and feces. Comparable excretion was found in volunteers. Isosulfan blue is a safe and efficacious vital dye for lymphangiography.

Adult↗
PubMed1988

[Hereditary congenital lymphedema with pseudosexual ambiguity].

A case of uncommon genital lymphedema in a newborn girl like a pseudo sexual ambiguity is reported. The karyotype was 46, XX. Lymphedema of the lower limbs in the patient and in the mother's family confirmed a None-Milroy disease. Different considerations about genetic counseling in hereditary lymphedema, isolated or associated with others anomalies, are developed.

Disorders of Sex Development↗