Ectopic crypt foci in conventional and serrated colorectal polyps.
CONCLUSIONS: ECF can most frequently be observed in TSAs but also in many TVAs, VAs and TAs, reflecting a histological overlap between serrated and conventional polyps. Especially, precursor lesions adjacent to CRC frequently contain ECF. PMID: 27281826 [PubMed - as supplied by publisher]
Conclusions: Solitary PJPs did not recur in this study. Although examination of the entire gastrointestinal tract using esophagogastroduodenoscopy, enteroscopy, and colonoscopy is desirable to exclude Peutz-Jeghers syndrome, follow-up endoscopy after endoscopic polyp resection may be unnecessary, once the diagnosis of a solitary PJP is made. PMID: 31582972 [PubMed]
Abstract Colorectal cancer (CRC) is one of the most common causes of cancer mortality in the world. The incidence is related to increases with age and western dietary habits. Early detection through screening by colonoscopy has been proven to effectively reduce disease-related mortality. Currently, it is generally accepted that most colorectal cancers originate from adenomas. This is known as the "adenoma-carcinoma sequence", and several studies have shown that early detection and removal of adenomas can effectively prevent the development of colorectal cancer. The other two pathways for CRC development ...
ConclusionsOur results suggest that there is not a strong association between SSA/Ps and subsequent advanced colorectal neoplasia during the 5 years following SSA/P removal.
Once it became clear that most colorectal cancers developed from premalignant colon polyps, screening colonoscopy with removal of these polyps became the focus of colon cancer prevention with demonstrable effectiveness. The brilliant simplicity of the flexible cautery snare quickly became the standard method for polypectomy, and the use of partial colon resections to remove precancerous colon polyps plummeted. As colonoscopy evolved with an emphasis on higher detection of adenomas and identification of subtle flat colon lesions such as sessile serrated adenomas, the need for improved polypectomy techniques has become obvious.
A key to successful colorectal cancer (CRC) prevention is complete colon polyp removal. The quality of colonoscopy is currently defined by how well we identify neoplastic lesions, as measured by adenoma detection rates (ADRs). A higher ADR correlates with lower rates of interval colon cancers.1 However, the completeness and skills of resection are important factors as well, but they are not current quality metrics and would be an onerous task to measure in daily practice.
ConclusionColon polyps are incompletely resected in a small but potentially significant percentage of cases. IRR are similar with the use of cold jumbo forceps and cold snare. Use of cold jumbo forceps may result in more successful tissue retrieval as compared to cold snare.
This study seeks to explore the relationship between an endoscopist ’s ADR and the total number of right versus left colon polyps removed per procedure per endoscopist.
Incomplete resection of colorectal neoplasia decreases the efficacy of colonoscopy and contributes to post-colonoscopy colorectal cancer. Conventional endoscopic resection (CR) of polyps, performed in a gas-distended colon, is the current standard, but incomplete resection rates (IRR) of approximately 3-25% for non-diminutive (>5mm) non-pedunculated lesions are reported. Underwater endoscopic resection (UR), a novel technique utilizing advantages of water-aided colonoscopy, may help reduce IRR.
Screening colonoscopy decreases the risk of colon cancer through detection and removal of early precursors including adenomas and serrated polyps. Different devices to designed to improve colonic visualization have shown promising results increasing overall polyp detection rate and adenoma detection rate (ADR).
This study was carried out in accordance with approval of the Melbourne Health and Walter and Eliza Hall Institute of Medical Research's Human Research Ethics Committee (approval number: 2013.081). All subjects gave written informed consent for participation and publication. Results and Discussion TGF-β signaling in NK cells is associated with: phosphorylation in SMAD2 and 3, inhibition of IL-15-induced metabolism/proliferation, simultaneous downregulation of CD44, CD49e, and Eomes, and upregulation of CD16 and CD49a expression (7, 10). SMAD family member 4 (SMAD4) belongs to the SMAD family of transcription...