ganglioneuroma/tyrosine

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Multiple endocrine neoplasia type 2A/localized cutaneous lichen amyloidosis associated with malignant pheochromocytoma and ganglioneuroma.

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We hereby present a rare variant of multiple endocrine neoplasia type 2A (MEN2A) associated with a rare skin disease primary cutaneous lichen amyloidosis and discrete malignant pheochromocytoma in both adrenal glands and pancreatic tail, and interestingly accompanied ganglioneuroma located in

Composite pheochromocytoma/ganglioneuroma of the adrenal gland associated with multiple endocrine neoplasia 2A: case report with immunohistochemical analysis.

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We report a case of composite pheochromocytoma/ganglioneuroma arising in a background of diffuse and nodular medullary hyperplasia in the adrenal gland of a 34-year-old man with multiple endocrine neoplasia 2a (MEN 2a). Cells were histologically classified as chromaffin or chromaffin-like (small

Pheochromocytomas and ganglioneuromas in the aging rats: morphological and immunohistochemical characterization.

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We investigated, morphologically and immunohistochemically, 74 medullary adrenal tumors, including 64 pheochromocytomas (14 malignant and 50 benign), 9 ganglioneuromas, and 1 malignant schwannoma. The tumors were detected in 2-year-old Wistar and Sprague-Dawley rats from carcinogenicity studies.

Ganglioneuromas and renal anomalies are induced by activated RET(MEN2B) in transgenic mice.

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Multiple endocrine neoplasia type 2B (MEN2B) is an autosomal dominant syndrome characterized by the development of medullary thyroid carcinoma, pheochromocytomas, musculoskeletal anomalies and mucosal ganglioneuromas. MEN2B is caused by a specific mutation (Met918-->Thr) in the RET receptor tyrosine

Adrenal ganglioneuromas in children with multiple endocrine neoplasia type 2: a report of two cases.

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BACKGROUND Pheochromocytomas of the adrenal gland are a common component of the multiple endocrine neoplasia type 2 (MEN2) syndromes. However, pure adrenal ganglioneuromas, an extremely rare pediatric tumor of neural crest origin composed of mature ganglion cells, have never been reported in

ERBB3 is a marker of a ganglioneuroblastoma/ganglioneuroma-like expression profile in neuroblastic tumours.

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BACKGROUND Neuroblastoma (NB) tumours are commonly divided into three cytogenetic subgroups. However, by unsupervised principal components analysis of gene expression profiles we recently identified four distinct subgroups, r1-r4. In the current study we characterized these different subgroups in

Gene expression of neuropeptide Y and neuropeptide-Y1 receptor in relation to proto-oncogene tyrosine kinase A, nerve-growth-factor low-affinity-receptor and the transcription factor N-myc in human neuroblastomas.

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The expression of neuropeptide Y (NPY) and NPY-Y1 receptor (NPY-Y1R) in relation to that of tyrosine kinase A (trkA), nerve-growth-factor low-affinity-receptor (LNGFR) and the transcription factor N-myc was studied in 26 neuroblastomas and one ganglioneuroma by quantitative Northern-blot analysis. A

Neuroendocrine markers in central nervous system neuronal tumors (gangliocytoma and ganglioglioma).

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We studied five cases of central nervous system neuronal tumor, one gangliocytoma and four gangliogliomas, both ultrastructurally and immunohistochemically, using antibodies to neuroendocrine markers including tyrosine hydroxylase (TH), serotonin (5HT), somatostatin (SOM), met-enkephalin (MEK),

Intramedullary secretory gangliocytoma.

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An 8-year-old boy developed severe systemic hypertension during resection of an intramedullary tumor. The histological, ultrastructural and immunocytochemical characteristics of the tumor are those of a gangliocytoma. Based on the demonstration of tyrosine hydroxylase in neuronal tumor cells, it is

Tyrosine hydroxylase indicates cell differentiation of catecholamine biosynthesis in neuroendocrine tumors.

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The intracellular localization of tyrosine hydroxylase (TH), which is the rate limiting enzyme in catecholamine (CA) biosynthesis, and its activity in various adrenal and other neuroendocrine tumors was studied. TH was strongly localized in adrenal medulla, pheochromocytoma, and paraganglioma, but

Expression of chromogranin a protein and messenger RNA and tyrosine hydroxylase protein in paraffin-embedded sections of neuroendocrine neoplasms.

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Forty-three neuroendocrine neoplasms were analyzed by immunohistochemistry for tyrosine hydroxylase and chrornogranin A and by in situ hybridization (ISH) for chrornogranin A messenger RNA (mRNA) using formalin-fixed paraffin-embedded tissue sections. These included pheochromocytomas (7), medullary

Real-time analysis of tyrosine hydroxylase gene expression: a sensitive and semiquantitative marker for minimal residual disease detection of neuroblastoma.

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OBJECTIVE The purpose of this study was to establish a sensitive and semiquantitative method for the detection of minimal residual disease of neuroblastoma, the most common solid tumor in childhood. METHODS Analysis was performed on a molecular level by reverse transcription-PCR using a new,

Adrenal pheochromocytoma-ganglioneuroma producing catecholamines and various neuropeptides.

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A 65-year-old woman presenting with back pain, difficulties in walking and watery diarrhea. A right adrenal tumor and high excretion of catecholamines were found. Laboratory examinations showed raised levels of vasoactive intestinal polypeptide, pancreatic polypeptide, gastrin and calcitonin.

Quantitative analysis of tyrosine hydroxylase mRNA for sensitive detection of neuroblastoma cells in blood and bone marrow.

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BACKGROUND Sensitive monitoring of minimal residual disease may improve the treatment of neuroblastoma in children. To detect and monitor neuroblastoma cells in blood and bone marrow, we developed a quantitative method for the analysis of tyrosine hydroxylase mRNA. METHODS We used real-time reverse

Single missense mutation in the tyrosine kinase catalytic domain of the RET protooncogene is associated with multiple endocrine neoplasia type 2B.

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Multiple endocrine neoplasia type 2B (MEN 2B) is a human cancer syndrome characterized by medullary thyroid carcinoma (MTC), pheochromocytomas, mucosal neuromas, ganglioneuromas of the intestinal tract, and skeletal and ophthalmic abnormalities. It appears both as an inherited disorder and as de

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