Cancer
  • FUSE Outperforms Forward-viewing Colonoscopy in Detecting Dysplasia in Patients With IBD

FUSE Outperforms Forward-viewing Colonoscopy in Detecting Dysplasia in Patients With IBD

The panoramic views obtained with full-spectrum endoscopy (FUSE) increase the number of dysplastic lesions detected in the colon, compared with conventional forward-viewing colonoscopy, researchers report in the May issue of Gastroenterology. Inflammatory bowel diseases (IBDs) increase the risk of colorectal cancer. Surveillance colonoscopy with chromoendoscopy is recommended, but conventional forward-viewing colonoscopy

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  • Gastroduodenal Metastases from Melanoma

Gastroduodenal Metastases from Melanoma

Researchers describe a case of gastroduodenal metastases from cutaneous melanoma, in the May issue of Gastroenterology. Inês Pita et al present the case of a 76-year-old man who arrived at the emergency department with exertional dyspnea and melena for the past 3 weeks, and an episode of presyncope. He denied orthopnea, paroxysmal nocturnal dyspnea,

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  • Hemosuccus Pancreaticus Caused by a Pancreatic Tumor

Hemosuccus Pancreaticus Caused by a Pancreatic Tumor

Researchers describe a rare cause of hemosuccus pancreaticus in a patient with pancreatic cancer. The gastrointestinal bleeding was caused by erosion of pancreatic adenocarcinoma into the colon, they show in the April issue of Clinical Gastroenterology and Hepatology. Hemosuccus pancreaticus is defined as hemorrhage from the ampulla of Vater via the pancreatic

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  • What are the Different Types of Liver Cancer, and How do They Develop?

What are the Different Types of Liver Cancer, and How do They Develop?

A review article in the March issue of Gastroenterology discusses different hypotheses about the cells responsible for liver tumorigenesis. The article also reviews the different classes of liver tumors, based on the molecular features, and how these affect patient prognosis. Daniela Sia et al describe the distinct molecular and clinical features of hepatocellular

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  • Video: Screening Breath Compounds to Identify Patients With Barrett’s Esophagus

Video: Screening Breath Compounds to Identify Patients With Barrett’s Esophagus

Researchers can identify patients with Barrett’s esophagus (BE) based on profiles of exhaled volatile organic compounds measured with an electronic nose device. This tool, described in the January issue of Gastroenterology, provides a portable, accessible, and widely acceptable tool for screening and surveillance for BE in patients with gastroesophageal reflux

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  • How Can We Study Genetic Heterogeneity Within Hepatocellular Carcinomas?

How Can We Study Genetic Heterogeneity Within Hepatocellular Carcinomas?

Researchers have developed a patient-derived cell line-based model to study how intratumor heterogeneity affects sensitivity of hepatocellular carcinoma (HCC) to different therapeutic agents, reported in the January issue of Gastroenterology. HCCs have a large amount of genetic heterogeneity within each tumor, making them difficult to treat. Multiple regions of tumors

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  • How Does Transforming Growth Factor beta Suppress Colorectal Tumor Development?

How Does Transforming Growth Factor beta Suppress Colorectal Tumor Development?

Researchers review the mechanisms by which loss of transforming growth factor beta (TGFB) proteins contribute to development and progression of colorectal cancer in the January 2017 issue of Gastroenterology. Development and progression of colorectal cancer involve loss of tumor suppressor proteins, including transforming growth factor beta (TGFB) family members. In colon

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  • Why do Pancreatic Tumor Cells Love the Liver?

Why do Pancreatic Tumor Cells Love the Liver?

Pancreatic ductal adenocarcinoma (PDAC) and its precursors secrete high levels of tissue inhibitor of metalloproteinases 1 (TIMP1) into the circulation, which activates hepatic stellate cells (HSCs) in liver. These cells help create a niche that promotes metastasis of pancreatic tumors to liver, researchers report in the November issue of Gastroenterology.

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  • A Mouse Model for Studying Pancreatic Tumor Resection and Adjuvant Therapy

A Mouse Model for Studying Pancreatic Tumor Resection and Adjuvant Therapy

Researchers have developed mice that develop focal, resectable pancreatic tumors closely resembling human pancreatic ductal adenocarcinomas (PDACs) that can be used to test adjuvant therapies, according to new research in the August issue of Gastroenterology. The authors show that administration of gemcitabine after resection of the tumors activates natural killer (NK) cell-mediated

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  • Why Isn’t Radiation Therapy Effective for Pancreatic Tumors?

Why Isn’t Radiation Therapy Effective for Pancreatic Tumors?

In pancreatic tumors of mice, radiation causes infiltration by macrophages that acquire an immune-suppressive phenotype that disables T-cell–mediated anti-tumor responses, researchers report in the June issue of Gastroenterology. Blocking colony stimulating factor (CSF1 or MCSF) prevents this process, allowing radiation to slow tumor growth, they show. Most patients with pancreatic

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