BACKGROUND Oncogenic human papillomaviruses (HPV) are sexually transmitted and linked to several epithelial malignancies, but an association between HPV and colorectal neoplasia is not established. Previously, we reported a three-fold increase in the odds of colorectal hyperplastic polyps associated with oncogenic HPV seropositivity in men but detected no HPV DNA in colorectal tissues from thes...

lon polypectomy. A colonoscopic examination had been carried out in another hospital several days earlier due to hematochezia and a polyp had been found in the sigmoid colon. The 1.5-cm, pedunculated polyp (●" Fig. 1) had a slight bulge in the stalk, and there was a mucosal bridge at the attachment to the intestinal wall, mimicking a submucosal tumor. The polyp was resected at the midportion of...

PURPOSE Endoscopic treatment of sessile and semipedunculated polyps remains controversial. Residual tissue remains frequently after endoscopic snare polypectomy. The aim of the study was to assess the outcome and safety of argon plasma coagulation (APC) in the management of gastric and colorectal polyp remnants after polypectomy, and to search for clinical parameters useful in predicting the ef...

BACKGROUND Recommendations by primary care physicians for colorectal screening after polypectomy will influence rates of colonoscopy in open-access systems that do not require consultation by a gastroenterologist before colonoscopy. OBJECTIVE To determine the surveillance recommendations of primary care physicians after polypectomy and compare them with recommendations from the U.S. Multisoci...

Colon cancer is the third leading cause of cancer-related death in the United States, affecting approximately 147,000 people each year. Most colon cancers arise from benign neoplasms and evolve into adenocarcinomas through a stepwise histologic progression sequence that starts from adenomas or hyperplastic polyps/serrated adenomas. Genetic alterations and, more recently, epigenetic alterations ...

BACKGROUND Hyperplastic polyps are the most common polypoid lesions of the stomach. Rarely, they cause gastric outlet obstruction by prolapsing through the pyloric channel, when they arise in the prepyloric antrum. CASE PRESENTATION A 62-year-old woman presented with intermittent nausea and vomiting of 4 months duration. Upper gastrointestinal endoscopy revealed a 30 mm prepyloric sessile pol...

Using a computer database, the author investigated the histopathology of 10 000 consecutive gastric specimens, taken in the last 12 years (2002-2013) at the pathology laboratory of a Japanese hospital. Re-observation of the already examined histological sections was done when the histological diagnosis and findings on the computer data base were not very obvious. The gastric specimens were iden...

The author investigated histopathology of 615 consecutive duodenal specimens in our pathology laboratory. Computer search of the duodenal lesions was performed. Review of histological slides was done, when appropriate. The duodenal specimens were composed of 567 benign lesions and 48 malignant lesions. The 567 benign lesions were composed of chronic non-specific duodenitis in 334 cases (60.0%),...

Aim: Sessile serrated lesions (SSL) have the potential for malignant transformation into colorectal carcinoma (CRC), which develops via pathway of carcinogenesis. Material and Methods: Based on colonoscopy pathology reports, all sessile or polyps in risk screening group were studied at an urban medical research center between July 2018 2022. We prospectively included consecutive classified as a...