PURPOSE To describe a patient with a sebaceous adenoma of the bulbar conjunctiva, a distinctly unusual site for this tumor, associated with glioblastoma multiforme and chronic lymphocytic leukemia. METHODS A 69-year-old woman presented with a red nodule on the temporal bulbar conjunctiva. The mass was excised. RESULTS Histopathologic examination of the tumor showed a sebaceous adenoma. With...

Glioblastoma multiforme is the most common primary malignant brain tumor in adults. In addition to poor response to treatment, a high recurrence rate contributes to the poor prognosis. The purpose of this study was to investigate the genetical and clinical characteristics of recurrent glioblastoma. We used whole transcriptome sequencing data to examine the distribution of molecular subtypes and...

BACKGROUND Glioblastoma multiforme is the most aggressive malignant primary brain tumor, characterized by rapid growth and extensive infiltration to neighboring normal brain parenchyma. Both PI3K/Akt and JNK pathways are essential to glioblastoma cell survival, migration and invasion. Due to their hyperactivation in glioblastoma cells, PI3K and JNK are promising targets for glioblastoma treatme...

BACKGROUND Survival of patients with anaplastic astrocytoma is highly variable. Prognostic markers would thus be useful to identify clinical subsets of such patients. Because specific genetic alterations have been associated with glioblastoma, we investigated whether similar genetic alterations could be detected in patients with anaplastic astrocytoma and used to identify those with particularl...

The surgical management of recurrent glioblastoma multiforme is controversial. Recent publications suggest that re-operation provides 3-5 months median survival, without significant increases in morbidity or mortality. Age (< or =50 years, although older patients may also benefit) and performance status (Karnofsky performance score > or =60-70) are the most important factors. Re-resection not o...

Alterations of the PTEN gene occur in glioblastoma multiforme. To determine the frequency of PTEN alteration, 34 consecutive glioblastomas were studied in detail. Sequencing each of the nine exons amplified from tumor DNA revealed 11 mutations. Analysis of polymorphic markers within and surrounding the PTEN gene identified an additional four homozygous deletion mutations. Loss of heterozygosity...

Turcot syndrome (TS) is a rare hereditary disorder clinically characterized by the occurrence of primary tumors of the colon and the central nervous system (CNS). Here we present the case of an 11-year-old boy with a synchronous clinical presentation of both glioblastoma multiforme (GBM) and colonic adenocarcinoma. A molecular genetic study revealed microsatellite instability in the DNA mismatc...