Diagnóstico prenatal del síndrome de Currarino completo. Presentación de un caso / Prenatal diagnosis of complete Currarino syndrome. Case report

RESUMEN Fundamento: El síndrome de Currarino es una enfermedad poco frecuente, presenta varias malformaciones conformadas por una tríada: estenosis anal, malformación sacrococcígea y masa presacra; su diagnóstico se realiza con frecuencia en edad adulta. Objetivo: Reportar un caso que se diagnosticó con síndrome de Currarino en etapa fetal. Caso clínico: Se reportó un feto del sexo masculino de 22 semanas de gestación, con síndrome de Currarino que al realizarle la necropsia se constató la presencia de: defecto sacro coccígeo (ausencia total del sacro), masa o tumoración presacra (de aspecto quístico), ano imperforado y ausencia de pliegue interglúteo, estenosis del sigmoide y bolsa escrotal única, riñón único, pélvico y poliquístico, con salida de 2 uréteres. Conclusiones: El síndrome de Currarino se caracteriza por una tríada de presentaciones, en muchos casos se puede pasar por alto y existir subdiagnósticos, por lo que su detección precoz permite evitar complicaciones en la etapa adulta y mejorar la calidad de vida.

ABSTRACT Background: Currarino syndrome is a non-frequently disease, presenting several malformations consisting of a triad: anal stenosis, sacrococcygeal malformation and presacral mass; its diagnosis is habitually performed in adulthood. Objective: To report a case diagnosed with Currarino syndrome in the fetal stage. Case report: A 22-week gestation male fetus with Currarino syndrome, at necropsy he was found to have: sacrococcygeal defect (total absence of the sacrum), presacral mass or tumors (cystic appearance), non-perforated anus and absence of intergluteal fold, sigmoid stenosis and single scrotal pouch, single, pelvic and polycystic kidney, with exit of 2 ureters. Conclusions: Currarino syndrome is characterized by a triad of appearances, in many cases it can be overlooked and underdiagnosed, so early detection can prevent complications in adulthood and improve life quality.

Currarino syndrome in an adult woman

Currarino syndrome is a hereditary disease characterized by the triad of sacral agenesis, anorectal malformation, and presacral mass. Most patients are diagnosed in childhood, and this condition rarely manifests in adulthood. In women, gynecological malformations associated with Currarino syndrome have been reported, such as bicornuate uterus, rectovaginal fistula, and septate uterus. We present a rare case of a 29-year-old woman with a suspected pelvic mass who was diagnosed with Currarino syndrome.

Clinical features and genetic analysis of Currarino syndrome / 中华实用儿科临床杂志

Objective To investigate the clinical manifestations and motor neuron and pancreas homeobox 1 (MNX1) gene mutation features of Currarino syndrome.Methods Microdeletion and microduplication of the patients were detected by chromosomal microarray analysis (CMA),and literature review was performed for the clinical syndrome of Currarino syndrome with similar genotype.Results Two patients with Currarino syndrome were recruited in this study.Patient 1,a 7-day girl,came to hospital because of recurrent vomiting.Physical examinations showed coarse facial features,vision problems,serious abdominal flatulence and anal stenosis.Bowel imaging revealed malrotation of the midgut;and the magnetic resonance imaging (MRI) showed tethered spinal cord and malformation of sacrococcygeal vertebra.A 7.89 Mb deletion in chromosome 7 q36.lq36.3 region including MNX1 gene and a 2.20 Mb duplication in 14q32.33 area was found by using CMA.Patient 2,a 1 year and 3 months girl,came to hospital with global development delay.Clinical examination showed facial dysmorphic,growth retardation,intellectural disability,ptosis in right eye and anal stenosis.This patient had developmental retardation in language and movement.MRI showed spina bifida occulta.And a 15.00 Mb deletion in chromosome 7 q35q36.3 region was found including MNX1 gene.Literature review revealed that deletions in MNX1 gene led to Currarino syndrome with coarse facial features,growth retardation and intellectural disability,and this type of Currarino syndrome had not been reported in China.Conclusions Two cases of Currarino syndrome caused by microdeletion in 7q36 are reported for the first time in China,and this study can help clinicians to have a better understanding of this disease.

Spectrum of MNX1 Pathogenic Variants and Associated Clinical Features in Korean Patients with Currarino Syndrome

BACKGROUND: The major genetic cause of Currarino syndrome (CS), a congenital malformation syndrome typically characterized by sacral agenesis, anorectal malformation, and presence of a pre-sacral mass, is known to be pathogenic variants in motor neuron and pancreas homeobox 1 (MNX1), which exist in almost all familial cases and 30% of sporadic cases. Less commonly, a large deletion or a complex rearrangement involving the 7q36 region is associated with CS. We investigated the spectrum of MNX1 pathogenic variants and associated clinical features in the Korean patients with CS. METHODS: We enrolled 25 patients with CS, including 24 sporadic cases and one familial case. Direct sequencing of MNX1 and multiplex ligation-dependent probe amplification were performed. We also analyzed clinical phenotypes and evaluated genotype-phenotype correlations. RESULTS: We identified six novel variants amongst a total of six null variants, one missense variant, and one large deletion. The null variants included four frameshift variants (p.Gly98Alafs*124, p.Gly145Alafs*77, p.Gly151Leufs*67, and p.Ala216Profs*5) and two nonsense variants (p.Tyr186* and p.Gln212*). The missense variant, p.Lys295Gln, was located in the highly-conserved homeobox domain and was predicted to be deleterious. A large deletion involving the 7q36 region was detected in one patient. Pathogenic variants in MNX1 were detected in 28% of all CS cases and 25% of sporadic cases. The clinical phenotype was variable in patients with and without pathogenic variants; no significant genotype-phenotype correlation was observed. CONCLUSIONS: This study revealed the spectrum and phenotypic variability of MNX1 pathogenic variants in the Korean population.

Síndrome de Currarino como enfermedad infrecuente dentro del diagnóstico diferencial de la patología anexial oncológica / Currarino Syndrome as a Rare Disease in the Differential Diagnosis of Oncological Adnexal Pathology

El Síndrome de Currarino se define como la presencia de una tríada característica que asocia: estenosis anal, malformación sacrococcígea y masa presacra. La escasa sintomatología, caracterizada además por su inespecificidad, provoca que en muchas ocasiones el diagnóstico se realice durante la edad adulta y pueda confundirse con patologías ginecológicas, de origen predominantemente oncológico. El diagnóstico mediante pruebas de imagen, se realiza fundamentalmente a través de la resonancia magnética nuclear. La extirpación quirúrgica de la masa presacra unida al tratamiento sintomático del resto de la triada son la base terapéutica de esta infrecuente patología. Presentamos el caso de una paciente de 20 años de edad con estreñimiento crónico y dolor abdominal inespecífico. Es enviada al Servicio de Ginecología por la presencia de una masa de gran tamaño que se supone de origen anexial. Tras el estudio exhaustivo de dicha paciente, se llegó a la conclusión diagnóstica de que dicha tumoración corresponde a un meningocele, asociado a agenesia parcial sacra y estenosis anal; tríada que define al Síndrome de Currarino.

Currarino Syndrome is defined as the presence of a characteristic triad that associates anal stricture, sacrococcygeal malformation and presacral mass defines this syndrome. The scarce symptomology, also characterized by nonspecific symptoms, conditions that in many cases the diagnosis is made in adulthood and can be confused with gynecological pathologies. The diagnosis is made by imaging tests, fundamentally the NMR (nuclear magnetic resonance). The main treatment is the surgical excision of the mass presacra together with the symptomatic treatment of the rest of symptoms. We present the case of a 20-year-old patient with chronic constipation and abdominal pain that is referred to Gynecology due to the presence of a mass that is supposed to be adnexal. After the study of this patient is diagnosed a meningocele, associated with partial sacral agenesis and anal stricture, triad that defines Currarino Syndrome.

Síndrome de Currarino y enfermedad de Hirschsprung: una asociación poco frecuente / Currarino's syndrome and Hirschsprung's disease: a rare combination

The Currarino syndrome is an autosomal dominant partial sacral agenesis involving sacral vertebrae S2 to S5, with presevation of the S1 vertebrae. In the most severe form of the syndrome, the sacral agenesis is associated to presacral mass, anorrectal and urogenital malformations. Hirschsprung's disease is a congenital malformation of the hindgut determined by the absence if parasympathetic intrinsic ganglion cells in the submucosal and myenteric plexuses. We present a case of a 3 years old male child affected from Currarino syndrome associated to Hirschprung's disease.

El Síndrome de Currarino consiste en agenesia sacra parcial de herencia genética autosómica dominante parcial, que afecta las vértebras sacras S2 a S5, preservándose S1. En la forma más severa del síndrome, a la agenesia sacra se asocian masa presacra y malformaciones anorrectales y urogenitales. La enfermedad de Hirschsprung es una malformación congénita del intestino grueso debida a la ausencia de células ganglionares intrínsecas parasimpáticas de la submucosa y de los plexos mientéricos. Presentamos el caso de un niño de 3 años con Síndrome de Currarino asociado a enfermedad de Hirschsprung.

Clinical Experience of Currarino Syndrome

Currarino syndrome is a hereditary syndrome characterized by the triad of a sacral bony defect, presacral mass and anorectal malformation. We retrospectively reviewed 13 Currarino syndrome patients who were treated in our center between 1997 and 2010. Demographic data, initial symptoms, initial diagnosis, pathologic diagnosis of presacral mass, associated anomalies and managements were analyzed. There were 8 boys and 5 girls. Four patients were diagnosed as Currarino syndrome immediately after birth with failure of passage of meconium and abdominal distension. Four patients underwent surgery for imperforate anus immediately after birth and were diagnosed as Currarino syndrome later and underwent reoperation. Three patients were diagnosed during work-up and management with of the tentative diagnosis of Hirschsprung's disease. Diagnosis of the remaining two patients was at the age of 26 months and 9 years and anorectal malformation was not associated. Twelve patients showed hemi-sacrum and one patient showed bilateral sacral subtotal agenesis. Two patients without anorectal malformation underwent presacral mass excision, untethering of spinal cord and repair of myelomeningocele. Six out of 8 patients, excluding 3 that expired or were lost to follow up, with anorectal malformation underwent colostomy, presacral mass excision, untethering of spinal cord, repair of myelomeningocele, posterior sagittal anorectoplasty and colostomy repair. One patient underwent only posterior sagittal anorectoplasty after colostomy. One waits the scheduled operation only with Hegar dilatation. Pathologic examation of presacral masses showed myelomeningoceles in 4 patients, lipomyelomeningoceles in 3 patients and dermoid cyst in one patient. Teratoma was combined in 2 patients. Eight patients needed neurosurgical operation for spinal cord problems. Seven patients had urologic anomalies and two of them underwent operation. Currarino syndrome should be considered as a differential diagnosis in pediatric patients with abdominal distension, constipation and anorectal malformation. For proper evaluation and treatment, a multi-disciplinary approach is recommended.