Manga traqueal cartilaginosa. Reporte de dos casos / Tracheal cartilaginous sleeve. Report of two cases

La manga traqueal cartilaginosa es una malformación de la vía aérea donde no se distinguen anillos traqueales. Un segmento continuo de cartílago se extiende desde el cricoides, pudiendo llegar hasta los bronquios principales. Está asociada a síndromes de craneosinostosis con la mutación FGFR2, además de muertes prematuras por oclusión de la tráquea con tapones mucosos. Se presenta el curso clínico de pacientes portadores de manga traqueal cartilaginosa en el contexto de una malformación craneofacial. Caso 1. Masculino, al nacer hipoplasia del tercio medio facial. Polisomnografía: índice de apnea/hipopnea de 37,7/hr. Laringotraqueobroncoscopía (LTBC): tráquea sin anillos cartilaginosos desde cricoides hasta bronquios fuentes. Se indica traqueostomía. Caso 2. Masculino, al nacer cráneo en trébol. Poligrafía: Síndrome de apnea/hipopnea obstructiva del sueño (SAHOS) leve. Revisión vía aérea: desde subglotis hasta bronquios principales se extiende tráquea en manga. Se indica traqueostomía. En el contexto de una craneosinostosis en niños, especialmente con mutación FGFR2, creemos necesario realizar una LTBC en búsqueda de manga traqueal, ya que si es diagnosticada se debe recomendar traqueostomía, mejorando su expectativa de vida. Si la indicación de traqueostomía fuese por SAHOS, es obligatoria una LTBC preoperatoria, para evitar el no tener referencias anatómicas en el proceso.

A tracheal cartilaginous sleeve is a malformation of the airway in which the tracheal rings are indistinguishable. A continuous segment of cartilage extends from the cricoid, and it may reach all the way to the main bronchi. It is associated with various craniosynostosis syndromes with the FGFR2 mutation, in addition to premature deaths due to occlusions caused by mucus plugs in the trachea. Here we present the clinical course of patients who suffer from Tracheal Cartilaginous Sleeve in the context of a craniofacial malformation. First case. Male, presenting at birth a midfacial hypoplasia. Polysomnography: presents a 37,7/h index of apnea/hypopnea. Laryngotracheobronchoscopy (LTB): trachea is without cartilaginous rings from the cricoid to the main bronchi. A tracheostomy is indicated. Second case. Male, cloverleaf skull at birth. Polysomnography: Obstructive Sleep Apnea-Hypopnea Syndrome (OSAHS) non-severe degree. Revision of the airway: the trachea in sleeve extends from the subglottis to the main bronchi. A tracheostomy is indicated. In the context of craniosynostosis in children, especially with FGFR2 mutation, we believe it is necessary to do an LTB in the search of a tracheal sleeve, since if it is diagnosed a tracheostomy must be indicated, to better the life expectancy of the patient. If the tracheostomy indication comes from an OSAHS, a preoperatory LTB is obligatory to avoid not having anatomical references during the procedure.

Síndrome de Pfeiffer con mutación Trp290Cys del gen FGFR2 y fístula rectovaginal / Pfeiffer syndrome with Trp290Cys mutation of the FGFR2 gene and rectovaginal fistula

El síndrome de Pfeiffer es una enfermedad autosómica dominante con una incidencia mundial estimada de 1 por cada 100 000 recién nacidos vivos. Se caracteriza principalmente por craneosinostosis, hipoplasia mediofacial, extremidades con gruesos artejos prominentes y sindactilia. Es causada por mutaciones alélicas en los genes del receptor del factor de crecimiento de fibroblastos 1 y 2.Presentamos el caso clínico de una recién nacida con cráneo en trébol, hipoplasia mediofacial, dentición congénita, proptosis bilateral severa, extremidades con dedos prominentes, sindactilia en pie izquierdo y fístula rectovaginal. A los 10 días de vida presenta perforación ocular derecha que requirió enucleación completa. Progresa con deterioro hemodinámico y respiratorio y fallece a los 11 días de edad.El diagnóstico clínico y molecular fue de síndrome de Pfeiffer tipo 2a con mutación Trp290Cys del gen FRFG2, que presentó fístula rectovaginal como asociación no descrita, constituyéndose en el primer caso reportado en el lugar de procedencia, pudiendo ser la primera manifestación de una mutación en el gen del receptor FGFR 2 en su área geográfica.

Pfeiffer syndrome is an autosomal dominant disease with an estimated worldwide incidence of 1 per 100,000 live births. It is mainly characterized by craniosynostosis, midface hypoplasia, great toes, and syndactyly. It is caused by allelic mutations in the fibroblast growth factor receptor 1 and 2 genes. We present a clinical case of female newborn with cloverleaf skull, mediofacial hypoplasia, congenital dentition, severe bilateral proptosis, limbs with prominent fingers, syndactyly in the left foot, and rectovaginal fistula. At 10 days old, she developed ocular perforation in the right eye and required enucleation. Subsequently, progressed with hemodynamic and respiratory deterioration and died at 11 days of age.In the present study, we report on a sporadic case of severe Pfeiffer syndrome type 2 in a Colombian infant who had a Trp290Cys mutation in the FRFG2 gene that presented rectovaginal fistula as non-described association, which makes it the first case reported in the place of origin. It could be the first appearance of a mutation in the gene of the FGFR 2 receptor in the geographical area.

Síndrome de Pfeiffer tipo 2: diagnóstico prenatal. Reporte de caso y revisión de la literatura / Pfeiffer Syndrome Type 2: Prenatal diagnosis. Case report and literature review

Pfeiffer syndrome is an autosomic dominant disorder characterized by craniosynostosis, midface hypoplasia and syndactyly of the hands and feet. Three different phenotypes have been described, where type 2 is the most severe and the one amenable of prenatal diagnosis. We present the first clinical case reported at Instituto Nacional Materno Perinatal, Lima, Peru, of a fetus with suspicious ultrasound prenatal findings of this syndrome including cloverleaf-shaped skull, severe ventriculomegaly, frontal bossing, ocular proptosis and overlapped fingers, who was born by cesarean section and died at day eight due to progressive respiratory distress.

El síndrome de Pfeiffer es una enfermedad rara de tipo autosómica dominante caracterizada por craneosinostosis bicoronal, hipoplasia medio facial y sindactilia de manos y pies. Se ha descrito 3 fenotipos, siendo el tipo 2 el más severo y que generalmente se diagnostica prenatalmente. Presentamos el primer caso descrito en el Instituto Nacional Materno Perinatal de Lima, Perú, de un feto con hallazgos ultrasonográficos sospechosos de este síndrome, como el cráneo en forma de trébol, ventriculomegalia severa, frente abombada, ojos protruidos y dedos superpuestos, que nació por cesárea y falleció a los 8 días de edad por distrés respiratorio progresivo.

Genetic Syndromes Associated with Craniosynostosis

Craniosynostosis is defined as the premature fusion of one or more of the cranial sutures. It leads not only to secondary distortion of skull shape but to various complications including neurologic, ophthalmic and respiratory dysfunction. Craniosynostosis is very heterogeneous in terms of its causes, presentation, and management. Both environmental factors and genetic factors are associated with development of craniosynostosis. Nonsyndromic craniosynostosis accounts for more than 70% of all cases. Syndromic craniosynostosis with a certain genetic cause is more likely to involve multiple sutures or bilateral coronal sutures. FGFR2, FGFR3, FGFR1, TWIST1 and EFNB1 genes are major causative genes of genetic syndromes associated with craniosynostosis. Although most of syndromic craniosynostosis show autosomal dominant inheritance, approximately half of patients are de novo cases. Apert syndrome, Pfeiffer syndrome, Crouzon syndrome, and Antley-Bixler syndrome are related to mutations in FGFR family (especially in FGFR2), and mutations in FGFRs can be overlapped between different syndromes. Saethre-Chotzen syndrome, Muenke syndrome, and craniofrontonasal syndrome are representative disorders showing isolated coronal suture involvement. Compared to the other types of craniosynostosis, single gene mutations can be more frequently detected, in one-third of coronal synostosis patients. Molecular diagnosis can be helpful to provide adequate genetic counseling and guidance for patients with syndromic craniosynostosis.

Apert and Pfeiffer Syndromes: A Report of Two Cases / 대한소아신경학회지

Craniosysostosis syndrome is caused by premature fusion of bones of skull and face during fetal development. It is related to Fibroblast growth factor receptor gene and most common craniosynostosis syndromes are Apert, Pfeiffer and Crouzon. Apert syndrome is one of the severe type of craniosynostosis syndromes which shows mutations in the Fibroblast growth factor receptor 2 (FGFR2) gene. Pfeiffer syndrome is also related with FGFR 1 or 2 gene mutation. We experienced two patients with craniosynostosis syndromes, Apert syndrome and Pfeiffer syndrome. The first baby was a in-born female baby presented with syndactly of the hands and feet and facial dysmorphism including shallow orbit with deep crease above eye brow. Apert syndrome was confirmed by the presence of a mutation in FGFR2. The second patient visited our developmental delay clinic due to developmental delay at seven month old age. He showed facial dysmorphism including cloverleaf-shaped skull, micrognathia, low set ears, low nasal bridge and high-arched palate, but there were no syndactly or limb anomalies. He was suspected of Pfeiffer syndrome, however his FGFR2 gene study was normal. These patients need multidisciplinary team management and regular follow up for visual, auditory, and cognitive development functions Pediatricians have important role on recognizing the patients with facial dysmorphism, planning to evaluate accompanying anomalies and making appropriate decisions about the timing of surgical management to minimize growth and cognitive impairments.

Craneoestenosis. II. Análisis de las craneoestenosis sindromáticas y diferentes tipos de tratamiento / Craneosynostosis. II. Analysis of syndromatic craniosynostosis and different types of treatment

En esta segunda parte del trabajo de revisión de las craneoestenosis se analizan los diferentes tipos de craneoestenosis sindromáticas, sus características clínicas, imagenológicas y, en los casos que se conocen, las alteraciones genéticas. También se describen los diferentes tipos de tratamientos para las craneoestenosis, tanto sindromáticas como no sindrómaticas, desde los tratamientos quirúrgicos clásicos para lograr la descompresión cerebral, la restauración de la anatomía y proporcionar el mayor grado de estética al menor. Por último, se incluye información acerca de los tratamientos de vanguardia como son las técnicas en ingeniería de tejidos, la utilización de sistemas bioabsorbibles, de sistemas de distracción ósea e, incluso, la cirugía endoscópica. Se espera que pronto exista un mayor número de publicaciones que reporten el éxito de estas nuevas técnicas.

In this second part of the Review Article on craniosynostosis, different types of syndromatic craniosynostosis are analyzed along with clinical and imaging aspects and, in known cases, embryogenetic alterations. Different types of treatments are also described for both syndromic and nonsyndromic craniosynostosis. These range from the classic surgical treatments for achieving brain decompression, restoring the anatomy and providing the highest degree of aesthetics for the child. Last, but not least, information on cutting-edge treatments such as techniques in tissue engineering, use of bioabsorbable bone distractors and even endoscopic surgical systems are included. It is expected that in the near future there should be a greater number of publications that report the success of these new techniques.

A Case of Pfeiffer Syndrome with Hydrocephalus and Multiple Congenital Anomalies

Pfeiffer syndrome is one of a rare form of craniosynostosis syndrome, showing variable degree of craniosynostosis, midface hypoplasia, broad thumbs and toes and syndactyly. This is transmitted in autosomal dominant pattern and known to be related to mutations in FGFR (Fibroblast Growth Factor Receptor) 1 or FGFR 2. We experience a case of newborn Pfeiffer syndrome type 3 who had multiple facial anomalies, thumbs and great toes anomalies, ankylosis of radius and ulnar and hydrocephalus.

Síndrome de Pfeiffer tipo 2 con expresividad variable

Introducción. Objetivo: presentar un caso clínico de síndrome de Pfeiffer, de 5 años de edad, con cráneo en trébol, proptosis ocular severa, y aparentemente sin retardo mental Caso clínico. Niño de 5 años de edad, producto de segunda gesta, embarazo normoevolutivo de término; padres de 19 años de edad al momento de nacer el propositus, sin antecedentes teratogénicos, ni consanguinidad o de otro padecimiento similar en miembros de la familia. A la exploración física: cráneo en trébol, frente amplia y prominente, proptosis ocular (antecedente de salida del globo ocular derecho en dos ocasiones), aplanamiento medio facial, pabellones auriculares con hélix de configuraciones en cruz horizontal, primer dedo de manos y pies anchos de su falange distal, sindactilia parcial en manos y pies. El cariotipo en linfocitos de sangre periférica mostró un complemento cromosómico normal 46, XY. Radiológicamente se observó cráneo en trébol, con múltiples impresiones digitales. Conclusión. El caso presentado aquí corresponde clínica y radiológicamente a un síndrome de Pfeiffer tipo 2, sin complicaciones viscerales y con desarrollo neurológico de acuerdo a su edad cronológica.

Introduction. Since 1964, about 30 cases of Pfeiffer syndrome type 2 have been informed; this variant is characterized by cloverleaf skull, prominent forehead, severe ocular proptosis, severe central nervous system damage, elbow synostosis, and early death. Case report. A 5 years old male withouth antecedents of consanguinity, teratogenic exposure of his parents (of 19 years of age at the time of the bird of patient), or familial malformation, was admitted. On physical examination a cloverleaf skull, wide forehead, ocular proptosis (in 2 previous occasions the right eye exited), mid facial flattening, horizontal cross configuration of ear helix, widening of the first finger of hand and feet, and partial syndactyly of hands and feet were observed. A normal 46 XY cariotype, and a normal neural development were found. Discussion. We present a case of Pfeiffer syndrome type 2 without visceral complications and normal neurologic development.

Pfeiffer Syndrome / 대한정형외과학회잡지

Pfeiffer syndrome, an unusual type of acrocephalosyndactyly, is a complex of associated malformations, first described by Pfeiffer in 1964. In addition to the common head and face anomalies seen in other acrocephalosyndactylies, its characteristics are broad thumbs and big toes, minimal syndactyly and normal intelligence. It is inherited in autosomal dominant pattern and shows various clinical features. The author's case was a 7-year old boy, who had been managed since birth for bilateral congenital resistant clubfeet including cast correction for six months and two operations. At present he represents not only the common features described above but also some unique features, e.g. pectus excavatum, posterior dislocation of both elbows, mild genu valgum, metatarsus adductus and complex malalignment of carpal and tarsal bones. To our knowledge, there is no report on Pfeiffer syndrome in Korea. The authors report a case of Pfeiffer syndrome with review of literatures.