Compared to traditional surgery, the endoscopic techniques such as Endoscopic Mucosal Resection (EMR) and Endoscopic Submucosal Dissection (ESD) have changed the treatment of colorectal cancer by offering less invasive alternatives.
These procedures are critical in the management of early-stage colorectal lesions, allowing for accurate diagnosis, treatment, and faster recovery.
How do these procedures work?
Let's break it down step-by-step with a visual guide to illustrate the processes of EMR and ESD.
Step 1: Initial Assessment & Preparation
EMR and ESD are both begin with careful preoperative assessment, including the patient's medical history and bowel preparation to ensure optimal visualization of the lesion during the procedure.
Key Tools: High-definition colonoscope and CO2 insufflation system for optimal view and patient comfort.2.
Step 2: Submucosal Injection
EMR: Through sclerotherapy needle inject beneath the mucosa to lift the lesion away from the underlying tissue, ensuring a safe resection. -
ESD: Using a similar injection method with EMR, followed by careful dissection of the lesion from the submucosal layer.-
Key Tools: Injection needles and solutions containing saline or hyaluronic acid.
ZKSK disposable injection needle
Step 3: Marking the Lesion (ESD)
ESD Only: Using (I shape ESD knife) mark the lesion with electrocautery, allows precise identification of the boundaries for resection. This is critical when dealing with larger or more complex lesions.
Key Tool: Electrosurgical knife for marking(I shape).
Step 4: Resection and Removal
EMR: The lesion is resected using a polypectomy snare technique after the mucosa is lifted.
ESD: Using an electrosurgical knife, the lesion is carefully incised circumferentially, and submucosal dissection is performed to remove the lesion in one piece.-
Key Tool: Disposable polypectomy snare for EMR; Disposable electrosurgical knives for precision cutting.(O/L/T shape)
Different shape of polypectomy snare
Different shape of ESD knife
Step 5: Post-Resection
Both procedures require careful observation for complications such as bleeding or perforation. Post-procedure monitoring is critical to ensure that there are no adverse outcomes.-
Key Consideration: Using hemostatic clips for bleeding control and monitoring for perforations.
ZKSK disposable hemoclip
2. Why This Matters?
Endoscopic procedures like EMR and ESD are at the forefront of colorectal cancer treatment because they offer higher complete resection rates, lower recurrence, and significantly reduce the need for invasive surgery. By visualizing the entire process, we can better understand the precision, expertise, and tools required to ensure successful outcomes.
3. What's Next?
With the development of the techniques, the future of colorectal cancer treatment looks promising with ongoing improvements in endoscopic tools, AI assistance, and training. To keep up with advancements, we must continue to prioritize knowledge sharing and development of standardized practices globally.
Would you like to learn more about the tools involved in EMR and ESD, or how these procedures are transforming patient care? Let's connect and share insights!
