AIMS AND BACKGROUND Meningiomas are classified following the WHO system of 2000 into three grades, benign (grade I), atypical (grade II), and anaplastic (grade III). We investigated the relation between tumor grade and Ki-67 and bcl-2. METHODS In the present study, 246 cases of meningioma were reclassified according to the WHO 2000 system. The relationship between tumor grade and morphologica...

Brain tumor growth or progression has been shown to occur in low-grade glial tumors and meningiomas. While progression has been documented in this population, transformation to a more aggressive high-grade glial tumor that can lead to increased morbidity and mortality has not been identified. In this case series, we document transformation from low-grade gliomas to highgrade gliomas (WHO grade ...

Over the last two decades the large volume of research involving various brain tracers has shed invaluable light on the pathophysiology of cerebral neoplasms. Yet the question remains as to how best to incorporate this newly acquired insight into the clinical context. Thallium is the most studied radiotracer with the longest track record. Many, but not all studies, show a relationship between (...

background: ovarian cancer comprises a heterogeneous group of neoplasms. the prognosis cannot be predicted by histopathologic examination alone. the aim of this study is to evaluate p53, pten, and β-catenin expressions in primary ovarian carcinomas in an attempt to find a possible relationship with morphologic parameters and clinical findings. methods: the study included 100 epithelial ovarian ...

OBJECTIVES To investigate the expression and prognostic value of bone sialoprotein (BSP) in glioma patients. METHODS We determined the expression of BSP using real-time RT-PCR and immunohistochemistry in tissue microarrays containing 15 normal brain and 270 glioma samples. Cumulative survival was calculated by the Kaplan-Meier method and analyzed by the log-rank test. Univariate and multivari...

PURPOSE To report the clinicopathologic and outcome features of superficial high-grade and deep low-grade penile squamous cell carcinomas. METHODS From a retrospectively-collected series of patients with penile cancer we identified 41 cases corresponding to 12 superficial high-grade tumors and 29 deep low-grade tumors. As outcomes we evaluated inguinal lymph node status, presence of tumor rel...

A 10-year-old boy underwent arthroscopic curettage for an intra-articular mass in knee joint. The tumor was diagnosed as low-grade fibrous sarcoma. Five years later, the patient presented with a recurrent tumor. The patient underwent a marginal excision with knee joint preservation and without adjuvant therapy. Two years after the last surgery, the patient is thriving with no evidence of recurr...

the basic pathogenic step in the process of tumor growth, invasion and metastasis is tumor-induced angiogenesis. the aim of this study was to evaluate the angiogenesis in colorectal carcinoma by microvascular density (mvd) determination with ihc (immunohistochemistry) method and to determine if and how angiogenesis correlates with clinicopathologic parameters. sixty two archival, paraffin embed...

p27Kip1 is a cyclin-dependent kinase inhibitor that negatively regulates cell proliferation by mediating cell cycle arrest in G1. This study was undertaken to assess the prognostic value of p27Kip1 for astrocytomas. Tissue samples from 130 astrocytomas (WHO grade 1, 5 cases; grade 2, 23 cases; grade 3, 64 cases; grade 4, 38 cases), including 92 primary and 38 recurrent tumors, were examined imm...