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neoplasms - Top 30 Publications

Asbestos Induces Epigenetic Repression of Ras Association Domain-Containing Protein 1, p16 Kinase 4a Inhibitor, and p14 Alternative Reading Frame in Normal Human Mesothelial Cells.

Whereas asbestos burden has been linked to cytogenetic alterations in malignant pleural mesotheliomas, epigenetic aberrations induced by these fibers have not been fully delineated.

Pindborg tumor: Pathology with special stains.

Odontogenic tumors constitute a wide spectrum of lesions ranging from malignant and benign neoplasms to dental hamartomas, all derived from the epithelial and ectomesenchymal remnants of the tooth forming apparatus. Calcifying epithelial odontogenic tumor (CEOT) is an uncommon, benign epithelial odontogenic tumor first described by Pindborg in 1956. It is a universally accepted eponym for this neoplasm. Pindborg tumor or CEOT is a locally aggressive neoplasm that accounts for 1% of the total odontogenic tumors, with recurrence in 14% of cases. The etiology of this tumor remains an enigma to the clinician. Pindborg suggested that the tumor arises from the remnants of reduced enamel epithelium of an unerupted tooth. Recent studies in literature report that the tumor arises from stratum intermedium. We report a case of Pindborg tumor in a 22-year-old male patient in the left mandibular posterior region. Radiographically, a well-defined radiolucency was associated with unerupted mandibular second molar which was displaced to the inferior border of the mandible. Along with routine haematoxylin and eosin stains, this case reports histopathological findings using Congo red stain and modified Gallegos stain.

Molecular genetics of BCR-ABL1 negative myeloproliferative neoplasms in India.

Over the past decade, we have moved on from a predominantly morphological and clinical classification of myeloproliferative neoplasms (MPN) to a more evolved classification that accounts for the molecular heterogeneity that is unique to this subgroup of hematological malignancies. This usually incorporates mutations in Janus kinase 2 (JAK2), MPL, and calreticulin (CALR) genes. In this manuscript, we report the frequency of these mutations in a cohort of Indian patients at a tertiary cancer center.

Combination of isocitrate dehydrogenase 1 (IDH1) mutation and podoplanin expression in brain tumors identifies patients at high or low risk of venous thromboembolism.

Venous thromboembolism (VTE) is a frequent complication in primary brain tumor patients. Independent studies revealed that podoplanin expression in brain tumors is associated with increased VTE risk, while the isocitrate dehydrogenase 1 (IDH1) mutation is associated with very low VTE risk.

Value of additional endoscopic ultrasonography for surveillance after surgical removal of intraductal papillary mucinous neoplasms.

This study evaluated the utility of endoscopic ultrasonography (EUS), combined with contrast-enhanced harmonic EUS (CH-EUS), for surveillance of the remnant pancreas after surgery for intraductal papillary mucinous neoplasm (IPMN).

Radioembolization for Hepatocellular Carcinoma Arising in the Setting of a Congenital Extrahepatic Portosystemic Shunt (Abernethy Malformation).

In a 50-year-old male with an incidentally discovered hepatocellular carcinoma, a congenital extrahepatic portosystemic shunt with the absence of the portal vein (Abernethy syndrome) was diagnosed by imaging. This study aims to discuss the variant anatomy relevant to this splanchnic vascular malformation, review its association with the development of liver neoplasms, and report the safety and efficacy of TARE followed by resection for a HCC arising in this rare condition.

Intratumoral Heterogeneity of SMAD4 Immunohistochemical Expression and Its Role in Prediction of Recurrence Pattern in Patients with Resectable Pancreatic Cancer.

The aim of our study was to evaluate consistency of SMAD4 expression in different tumor areas and its correlation with recurrence pattern in patients after resection for pancreatic cancer (PC).

Role of quantitative computed tomography texture analysis in the prediction of adherent perinephric fat.

To assess the performance of computed tomography (CT) texture analysis to predict the presence of adherent perinephric fat (APF).

A Case of Gastric Neuroendocrine Neoplasm with Mixed Grade: a Distinct Type of "High"-grade Well-Differentiated Neuroendocrine Neoplasm.

Grade 3 neuroendocrine tumor (NET G3) is a rare new entity that has recently been introduced in the classification of neuroendocrine neoplasms of the pancreas. It is a well-differentiated form, with a high proliferative activity (Ki67 > 20%), and it represents a category whose prognosis is intermediate between NET G2 and poorly differentiated neuroendocrine carcinoma (NEC G3). In sites other than the pancreas, this new category is by far less coded. Herein is reported a case of NET G3 of the stomach, the 13th described in literature. The patient was a 71-year-old man with a mass in the gastric fundus. Histological examination revealed a neuroendocrine tumor that was mostly composed by areas with conventional well-differentiated features and intermediate proliferative rate (< 20 mitoses/10 HPFs and 7% Ki67); part of the tumor was characterized by increased nuclear atypia, a confluent growth pattern, intermediate mitotic activity, and high Ki67 value (25%). The tumor was studied immunohistochemically and molecularly, and the only alteration that came out was MEN1 gene mutation (Lau584SerfsTer5) in both the high- and low-grade components. According to the actual classification of gastric neuroendocrine neoplasms, this case is labeled as NEC G3 but it should be named NET G3, with a much better prognosis than the former. Overall, both morphological pattern and the Ki67 value should be mentioned in the histological report in cases of high-grade neuroendocrine neoplasms because of its clinical significance in defining the prognosis and for new potential therapeutic approaches.

Diagnostic accuracy of inflammatory markers for distinguishing malignant and benign ovarian masses.