scholarly journals Chiari I malformation and Noonan’s syndrome: Shared manifestations of RASopathy

Author(s):  
Megan Still ◽  
◽  
Patricia Miller ◽  
William Dodd ◽  
Rachel Moor ◽  
...  

Neurologic sequalae of Noonan syndrome have been postulated in the literature. A topic of significance is the role of RASopathy in the shared pathophysiology of Noonan Syndrome and Chiari I malformation. In this unique case report, we present a patient with concomitant Noonan Syndrome and Chiari I with 4th ventricular outflow obstruction. The case highlights the importance of close clinical suspicion in this patient population. We utilize the case to delve into intricacies of the known pathophysiology and encourage ongoing investigation. Keywords: Noonan syndrome; Chiari I malformation; RASopathy.

2003 ◽  
Vol 19 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Enrique C. G. Ventureyra ◽  
Hani Abdel Aziz ◽  
Michael Vassilyadi

Author(s):  
Flor Wilson Giraldo ◽  
Hector Lezcano ◽  
Leonardo Barrios

<p>Introducción: Las Malformaciones de Chiari (M.C.) son alteraciones estructurales a nivel del cerebelo de etiología en estudio. Muy raras, afectan al 0,5% de la población. Más de la mitad de los pacientes cursan con siringomielia. Caso clínico: Femenina de 47 años con antecedente de M.C. Tipo I, acude con cuadro de dos semanas de evolución de cefalea holocraneana de intensidad 8/10, asociado a mareo e inestabilidad a la marcha. Hallazgos positivos de alteración en los pares craneales III, VIII, IX; hipertonía, signo de Babinski y Hoffman positivos bilaterales; ataxia truncal; nistagmus a la derecha; fuerza muscular disminuida en miembros superiores e hiperreflexia. Discusión: Ante la sospecha clínica, y las múltiples alteraciones a nivel del cerebelo y bulbo, se procede a realizar estudios de imagen y se confirma el diagnóstico de siringomielia.</p><p><strong>Abstract: </strong></p><p>Introduction: Chiari malformations (C.M.) are structural alterations in cerebellum. They are of unknown etiology, at present in study. They are very rare and affect 0,5 % of the population. More than half of the patients have syringomyelia. Clinical case: A 47-year-old female with medical record of C.M. Type I, presents with a two-week evolution holocranial headache, 8/10 in intensity, associated with dizziness and gait instability. Positive findings of alteration in cranial nerves III, VIII, IX; hypertonia, Babinski and Hoffman bilateral sign; truncal ataxia; nystagmus on the right; decreased muscle strength in the upper limbs and hyperreflexia. Discussion: Due to clinical suspicion and multiple alterations in cerebellum and bulb, imaging studies are performed and the diagnosis of syringomyelia is confirmed.</p>


2016 ◽  
Vol 18 (6) ◽  
pp. 708-712 ◽  
Author(s):  
Berje Shammassian ◽  
Sunil Manjila ◽  
Efrem Cox ◽  
Kaine Onwuzulike ◽  
Dehua Wang ◽  
...  

Intracranial ectopic salivary gland rests within dural-based lesions are reported very infrequently in the literature. The authors report the unique case of a 12-year-old boy with a cerebellar medulloblastoma positive for sonic hedgehog (Shh) that contained intraaxial mature ectopic salivary gland rests. The patient underwent clinical and radiological monitoring postoperatively, until he died of disseminated disease. An autopsy showed no evidence of salivary glands within disseminated lesions. The intraaxial presence of salivary gland rests and concomitant Shh positivity of the described tumor point to a disorder in differentiation as opposed to ectopic developmental foci, which are uniformly dural based in the described literature. The authors demonstrate the characteristic “papilionaceous” appearance of the salivary glands with mucicarmine stain and highlight the role of Shh signaling in explaining the intraaxial presence of seromucous gland analogs. This article reports the first intraaxial posterior fossa tumor with heterotopic salivary gland rests, and it provides molecular and embryopathological insights into the development of these lesions.


2010 ◽  
Vol 82 (9) ◽  
pp. 1058-1059 ◽  
Author(s):  
K. D. Than ◽  
M. Sharifpour ◽  
A. C. Wang ◽  
B. G. Thompson ◽  
A. S. Pandey

2014 ◽  
Vol 344 (1-2) ◽  
pp. 240-242 ◽  
Author(s):  
Lili Wen ◽  
Chiyuan Ma ◽  
Handong Wang ◽  
Zhigang Hu

2004 ◽  
Vol 19 (6) ◽  
pp. 459-462 ◽  
Author(s):  
R. Shane Tubbs ◽  
John C. Wellons ◽  
Jeffrey P. Blount ◽  
W. Jerry Oakes

Sign in / Sign up

Export Citation Format

Share Document