Natural Orifice Surgery
Natural Orifice Surgery - Related Videos
08:26
Clinical Application of Single-Surgeon, Three-Port, Laparoscopic Resection for Colorectal Cancer with Natural Orifice Specimen Extraction
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Cited by 1 •
2023
Here, we present a protocol to successfully perform single-surgeon, three-port, laparoscopic resection for colorectal cancer with natural orifice specimen extraction.
01:10
Nature and Nurture
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2019
Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience, such as differences...
06:48
Natural Selection - Concepts
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2019
Fitness Widespread variation of phenotypes in natural populations provides the raw material for evolution, which is the change in the inherited traits of populations over successive generations. Natural selection is one of the main mechanisms of evolution and requires variable traits to be heritable and associated with differential survival and/or reproductive success. Phenotypes that correlate with greater success will have more offspring that survive to reproduce in the next generation, and...
08:53
Natural Selection - Student Protocol
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2019
Simulating Natural Selection ExpandTo begin, cut the white, black, and gray pipe cleaners into quarters, which should produce a total of 100 pieces that are 3 inches long. Then, cut the green pipe cleaners in the quantities and lengths specified in the video, taking care to minimize waste. This approximates a normal distribution of lengths and should result in an additional 100 pieces total. NOTE: One 12-inch pipe cleaner should yield multiple lengths, for example, a 5-inch piece and a 7-inch...
12:13
Considerations for Rodent Surgery
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN The Guide for the Care and Use of Laboratory Animals1 dictates that rodent survival surgery be performed aseptically. Aseptic technique utilizes specific practices that minimize the contamination of the surgical site, including patient preparation, surgeon preparation, sterilization of instruments and other supplies, and the use of a clean and controlled environment. Presurgical planning,...
FAQs
Imaging helps guide instruments toward internal targets, while flexible endoscopes and laparoscopic tools provide the means to examine, sample, remove, or retrieve tissue. Together, these components support controlled access through an existing body opening rather than relying solely on external entry points. In cancer research, this combination enables investigation of tumor-focused procedures while tracking diagnostic and treatment-related objectives.
Using existing body openings may reduce the number of external incisions and the amount of tissue disruption associated with access. That potential can make recovery an important outcome when researchers assess the approach. However, the value of reduced invasiveness remains tied to whether the procedure can preserve adequate diagnostic information and oncologic effectiveness for the intended cancer-related task.
Flexible endoscopes can provide a route for visualized internal access, while laparoscopic instruments support tissue handling during procedures that require sampling, resection, or retrieval. Their use allows investigators to examine how different tool configurations support specific cancer-related objectives. The selected instruments therefore influence what the procedure can accomplish, from obtaining tumor material to removing or extracting tissue.
A cancer-focused workflow may use guided access to obtain a biopsy, resect targeted tissue, or retrieve a specimen through an existing body opening. These activities serve different research purposes: sampling provides tumor material for investigation, whereas resection or extraction addresses tissue removal. The approach therefore supports both diagnostic work and studies of less invasive treatment strategies.
Its relevance comes from connecting surgical innovation with practical cancer objectives, including tumor sampling, specimen extraction, and evaluation of less invasive treatment strategies. Researchers can examine whether access through existing openings supports useful diagnostic or oncologic procedures while potentially improving recovery. This makes the approach a bridge between technical surgical development and clinically relevant cancer research questions.
Studies should consider more than whether internal tissue can be reached. Important outcomes include the quality of tumor sampling, successful specimen extraction or resection, preservation of diagnostic value, and maintenance of oncologic effectiveness. Researchers may also examine whether reduced external incisions and tissue disruption correspond with improved recovery, since these potential benefits must be assessed alongside cancer-related performance.