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Nevoid basal cell carcinoma syndrome - Top 30 Publications

Familial Syndromes Involving Meningiomas Provide Mechanistic Insight Into Sporadic Disease.

Currently, there is an incomplete understanding of the molecular pathogenesis of meningiomas, the most common primary brain tumor. Several familial syndromes are characterized by increased meningioma risk, and the genetics of these syndromes provides mechanistic insight into sporadic disease. The best defined of these syndromes is neurofibromatosis type 2, which is caused by a mutation in the NF2 gene and has a meningioma incidence of approximately 50%. This finding led to the subsequent discovery that NF2 loss-of-function occurs in up to 60% of sporadic tumors. Other important familial diseases with increased meningioma risk include nevoid basal cell carcinoma syndrome, multiple endocrine neoplasia 1 (MEN1), Cowden syndrome, Werner syndrome, BAP1 tumor predisposition syndrome, Rubinstein-Taybi syndrome, and familial meningiomatosis caused by germline mutations in the SMARCB1 and SMARCE1 genes. For each of these syndromes, the diagnostic criteria, incidence in the population, and frequency of meningioma are presented to review the relevant clinical information for these conditions. The genetic mutations, molecular pathway derangements, and relationship to sporadic disease for each syndrome are described in detail to identify targets for further investigation. Familial syndromes characterized by meningiomas often affect genes and pathways that are also implicated in a subset of sporadic cases, suggesting key molecular targets for therapeutic intervention. Further studies are needed to resolve the functional relevance of specific genes whose significance in sporadic disease remains to be elucidated.

Odontogenic Keratocysts as First Manifestation of Nevoid Basal Cell Carcinoma Syndrome: Surgical Management and Immunohistochemical Analysis.

Nevoid Basal Cell Carcinoma Syndrome (NBCCS), also known as Gorlin syndrome, is a rare autosomal dominant disorder, with no gender predilection. Individuals with NBCCS are commonly diagnosed between 17 and 35 years old and can present multiple basal cell carcinomas scattered throughout the body, presence of recurrent and early-onset odontogenic keratocysts (OKCs) and skeletal abnormalities. This article describes a case of a 13-year-old white boy who referred complaining of facial asymmetry. Extraoral examination revealed volumetric increase displacing the nasal ala from the right side and extended to the zygomatic bone. The intraoral evaluation showed mixed dentition with moderate degree of malocclusion. In addition, bilateral vestibular fornix swelling was observed in the upper canine region. An increase in volume was also detected on the hard palate on the right side. Computed tomography revealed multiple hypodense lesions with cystic appearance. The aspiration was positive, with a yellowish aspirate of serous consistency of all lesions. Given the numerous lesions, it was decided to decompress them for posterior enucleation procedures. In addition to other manifestations, the patient was diagnosed with NBCCS. Although common, the occurrence of OKCs in pediatric patients, especially in multiple lesions, is highly indicative of NBCCS, and its investigation should be considered, even in the absence of other signs of this syndrome. Synchronous decompression was satisfactory and can be used in similar cases of multiple cystic lesions.

Basaloid Follicular Hamartoma: A Case Report and a Novel Cosmetic Treatment.