OBJECTIVETo analyze the expressions of BAG-1 in meningioma for further understanding of biological behaviors of meningiomas.

METHODSThe specimens included in this study were collected from 158 meningioma cases. Streptavidin-peroxidase were used in immunohistochemical staining. The results of immunohistochemical score were depending on the positive ratio and intensity of the immunoreactivity. The expressions of BAG-1 in meningioma were analyzed in relationship with histopathologic grading, postoperative recurrence.

RESULTSThe difference in the expression degree of BAG-1 between each subtype in the same histopathologic grade and various subtypes between the grade of II to III were not statically significant (P > 0.05). The expression degree of BAG-1 between each subtype in the pathological grade I to the each subtype pathological grade I or III was different, the difference had statistical significance (P < 0.05 or P < 0.01). The immunohistochemical score of the expression of BAG-1 was decreased gradually with the pathologic grading of WHO increased, and the result was statistically significant (chi2 = 141.49, P < 0.01). As the immunohistochemical score of the expression of BAG-1 decreased the postoperative meningioma was easy to recur, the result was statistically significant (x2 = 55.13, P < 0.01).

CONCLUSIONThe expression degree of BAG-1 is in close correlations with the WHO pathologic grading of meningioma. The lower the expressions of BAG-1, the more recurrent with postoperation of meningiomas will be.

Adolescent ; Adult ; Aged ; Apoptosis ; DNA-Binding Proteins ; metabolism ; Female ; Humans ; Meningeal Neoplasms ; metabolism ; pathology ; Meningioma ; metabolism ; pathology ; Middle Aged ; Neoplasm Grading ; Neoplasm Recurrence, Local ; Prognosis ; Transcription Factors ; metabolism ; Young Adult

A 31-year-old Korean male presented with altered consciousness and severe headache. Brain MRI delineated focal leptomeningeal enhancement without any intracerebral lesions. Diagnosis was made based on a brain biopsy showing anaplastic large cell lymphoma (ALCL), immunohistochemical stains revealing positivity for anaplastic lymphoma kinase (ALK) and an absence of involvement in any other organs; specifically, the primary central nervous system ALK+ALCL. Complete remission was achieved following 5 cycles of systemic chemotherapy with a high dose of Methotrexate and a simultaneous 7 cycles of intrathecal triple chemotherapy. Diagnosis of primary leptomeningeal ALK+ALCL is challenging given its rarity and non-specific symptoms along with non-pathognomonic radiologic findings. We present the first case of primary leptomeningeal ALK-positive ALCL where the clinical course, pathologic characteristics and treatment modality are described as well as a review of literature.
Adult ; Antineoplastic Agents/therapeutic use ; Biopsy ; Brain/metabolism/pathology ; Diagnosis, Differential ; Humans ; Immunohistochemistry ; Lymphoma, Large-Cell, Anaplastic/*diagnosis/drug therapy/pathology ; Male ; Meningeal Neoplasms/*diagnosis/drug therapy/pathology ; Receptor Protein-Tyrosine Kinases/*metabolism

Meningioma is a common intracranial tumor in adults. Pediatric cases account for approximately 1.5% of all intracranial meningiomas, and very few cases show malignant histological features. Primary pediatric malignant meningioma in the cerebellopontine angle is extremely uncommon. Herein, we report a 2-year-old girl with malignant meningioma in the cerebellopontine angle. The clinical features, diagnosis, and treatment protocol are discussed.
Cerebellar Neoplasms ; diagnostic imaging ; metabolism ; pathology ; surgery ; Cerebellopontine Angle ; Child, Preschool ; Female ; Follow-Up Studies ; Humans ; Meningeal Neoplasms ; diagnostic imaging ; metabolism ; pathology ; surgery ; Meningioma ; diagnostic imaging ; metabolism ; pathology ; surgery ; Mucin-1 ; metabolism ; Radiography ; S100 Proteins ; metabolism ; Vimentin ; metabolism

Multiple endocrine neoplasia type 1 (MEN1) syndrome includes varying combinations of endocrine and non-endocrine tumors. There are also a considerable number of atypical MEN1 syndrome. In this case, a 68-yr-old woman was referred to the Department of Endocrinology for hypercalcemia. Five years ago, she had diagnosed as primary hyperaldosteronism and now newly diagnosed as parathyroid hyperplasia with laboratory and pathologic findings. Hurthle-cell thyroid cancer was also resected during the parathyroid exploration and small meningioma was found on brain MRI. Her general condition has markedly improved and her adrenal mass and meningioma are being closely observed now. We could find the loss of heterozygosity of the MEN1 locus in parathyroid glands, suggesting a MEN1-related tumor, but not a germline mutation. Considering a variety of phenotypic expression and a limitation of current molecular analysis, periodic follow up will be needed in patients with a MEN1-like phenotype.
Aged ; Base Sequence ; Brain/radionuclide imaging ; Female ; Humans ; Hyperaldosteronism/complications/*diagnosis ; Hyperparathyroidism, Primary/*diagnosis/etiology/pathology ; Loss of Heterozygosity ; Magnetic Resonance Imaging ; Meningeal Neoplasms/complications/*diagnosis/radionuclide imaging ; Meningioma/complications/*diagnosis/radionuclide imaging ; Mutation ; Parathyroid Glands/pathology ; Proto-Oncogene Proteins/genetics/metabolism ; Sequence Analysis, DNA ; Thyroid Neoplasms/complications/*diagnosis/pathology ; Tomography, X-Ray Computed

Mantle cell lymphoma (MCL) is an uncommon type of gastrointestinal lymphoma. MCL is a distinct subtype of B-cell non-Hodgkin lymphomas. The major subtype of MCL is characterized by the presence of multiple lymphomatous polyposis (MLP), in which multiple polyps are observed along the gastrointestinal tract. The malignant cells express pan B-cell marker and the T-cell marker cluster of differentiation 5. The chromosomal translocation t(11;14)(q13;q32) that causes cyclin D1 overexpression is commonly observed on the cytogenetic analysis of MCL. Survival improvement has recently been achieved for patient with MCL by the successful introduction of monoclonal antibodies and dose-intensified approaches for treatment, including autologous stem cell transplantation strategies. Some reports suggest that there is an increased incidence of second malignancies in patients with MCL or lymphoma. We report a case of MCL involving the colon; the patient was a 60-year-old man who complained of low abdominal discomfort during defecation. During the workup, a meningioma was unexpectedly discovered. On analysis, the tumor was found to be a t(11;14)-negative and non-MLP-type MCL.
Chromosomes, Human, Pair 11 ; Chromosomes, Human, Pair 14 ; Cyclin D1/metabolism ; Humans ; Lymphoma, Mantle-Cell/*diagnosis/genetics/metabolism ; Magnetic Resonance Imaging ; Male ; Meningeal Neoplasms/complications/*diagnosis/pathology ; Meningioma/complications/*diagnosis/pathology ; Middle Aged ; Positron-Emission Tomography ; Translocation, Genetic

Adolescent ; Adult ; Brain Neoplasms ; diagnosis ; metabolism ; pathology ; surgery ; Female ; Follow-Up Studies ; Humans ; Magnetic Resonance Imaging ; Male ; Meningeal Neoplasms ; diagnosis ; metabolism ; pathology ; surgery ; Meningioma ; diagnosis ; metabolism ; pathology ; surgery ; Middle Aged ; Mucin-1 ; metabolism ; Neoplasm Recurrence, Local ; Reoperation ; Retrospective Studies ; Tomography, X-Ray Computed ; Vimentin ; metabolism ; Young Adult

Adult ; Aged ; Antigens, CD34 ; metabolism ; Chondrosarcoma, Mesenchymal ; metabolism ; pathology ; Diagnosis, Differential ; Female ; Follow-Up Studies ; Hemangiopericytoma ; metabolism ; pathology ; radiotherapy ; surgery ; Humans ; Male ; Meningeal Neoplasms ; metabolism ; pathology ; radiotherapy ; surgery ; Meningioma ; metabolism ; pathology ; Middle Aged ; Neoplasm Recurrence, Local ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; Solitary Fibrous Tumors ; metabolism ; pathology ; Vimentin ; metabolism ; Young Adult

Adult ; Diagnosis, Differential ; Humans ; MART-1 Antigen ; metabolism ; Magnetic Resonance Imaging ; Male ; Medulloblastoma ; metabolism ; pathology ; Melanocytes ; pathology ; Melanoma ; diagnosis ; metabolism ; pathology ; surgery ; Melanoma-Specific Antigens ; metabolism ; Meningeal Neoplasms ; diagnosis ; metabolism ; pathology ; surgery ; Neoplasms, Multiple Primary ; diagnosis ; metabolism ; pathology ; surgery ; Neurilemmoma ; metabolism ; pathology ; Nevus of Ota ; diagnosis ; metabolism ; pathology ; surgery ; S100 Proteins ; metabolism ; Skin Neoplasms ; diagnosis ; metabolism ; pathology ; surgery ; Vimentin ; metabolism

Adult ; Desmin ; metabolism ; Diagnosis, Differential ; Diagnostic Errors ; Humans ; Male ; Melanoma-Specific Antigens ; metabolism ; Meningeal Neoplasms ; metabolism ; pathology ; radiotherapy ; surgery ; Meningioma ; metabolism ; pathology ; Paraganglioma ; metabolism ; pathology ; Sarcoma, Alveolar Soft Part ; metabolism ; pathology ; radiotherapy ; surgery ; Sarcoma, Clear Cell ; metabolism ; pathology ; Tomography, X-Ray Computed ; Vimentin ; metabolism

This study was aimed to explore the value of quantitative proton MR spectroscopy (1H-MRS) in the differentiation of benign and malignant meningioma. 23 cases, including 19 benign (grade I) and 4 malignant (grade II-III) meningiomas, underwent single voxel 1H-MRS (TR/TE = 2000 ms/68, 136, 272 ms). T2 relaxation time of tissue water and choline were estimated by an exponential decay model. Choline concentration was calculated using tissue water as the internal reference, and corrected according to intra-voxel cystic/necrotic parts. Tissue water T2 of benign and malignant meningiomas were (105 +/- 41) ms and (151 +/- 42) ms, respectively. The difference was statistically significant (P = 0.033). While Choline T2 of benign and malignant meningiomas were (242 +/- 73) ms and (316 +/- 102) ms respectively, the difference was not significant (P = 0.105). Choline concentration was (2.86 +/- 0.86) mmol/ kg wet weight in benign meningiomas and (3.53 +/- 0.60) mmol/kg wet weight in malignant ones; after correction they increased to (2.98 +/- 0.93)mmol/kg wet weight and (4.58 +/- 1.22) mmol/kg wet weight, respectively, and the difference was significant (P = 0.019). In conclusion, quantitative 1H-MRS is useful for the differentiation of benign and malignant meningioma by T2 relaxation time and absolute choline concentration.
Adult ; Aged ; Choline ; metabolism ; Diagnosis, Differential ; Female ; Humans ; Magnetic Resonance Spectroscopy ; methods ; Male ; Meningeal Neoplasms ; diagnosis ; metabolism ; pathology ; Meningioma ; diagnosis ; metabolism ; pathology ; Middle Aged ; Protons ; Young Adult