About
Dr. Katherine Marchut is a dedicated Gastroenterologist specializing in the diagnosis and treatment of a wide array of disorders affecting the digestive system in adult patients, and may also see older adolescents for certain conditions. Practicing at Hôpital Cité-de-la-Santé , Dép de Gastro-entérologie in Laval, QC, she is a key member of the local medical community. She provides comprehensive care for a wide range of digestive system disorders, including conditions affecting the esophagus, stomach, intestines, liver, and pancreas, utilizing diagnostic and therapeutic endoscopy. Her practice emphasizes a patient-centered approach, focusing on accurate diagnosis, effective treatment, and ongoing support for individuals with digestive health concerns.
Dr. Marchut holds a Medical Degree from a recognized institution and has accumulated over 10 years of experience as a Gastroenterologist since 2014. She has completed extensive post-graduate training and holds the necessary certifications to practice Gastroenterology (Comprehensive Care for Digestive System Disorders) in QC, adhering to the standards set by the Collège des médecins du Québec (CMQ). Her credentials ensure that she maintains a high level of professional competence and up-to-date knowledge in her field.
Dedicated to evidence-based digestive health care, Dr. Marchut emphasizes patient education on GI conditions and lifestyle modifications. She strives to achieve early and accurate diagnoses through advanced procedures, enabling personalized treatment plans tailored to each patient's needs. Committed to serving the Laval community, she speaks both English and French, ensuring clear communication and compassionate care in a supportive environment.
Dr. Katherine Marchut diagnoses and treats a wide range of digestive system disorders, including:
Inflammatory Bowel Disease (IBD) Focus
- Microscopic Colitis (often considered alongside IBD for chronic diarrhea): Though distinct from classic IBD, it's an inflammatory condition of the colon diagnosed by biopsy, causing chronic watery diarrhea.
- Indeterminate Colitis & IBD-Unclassified (IBD-U): Cases of IBD, particularly early in the disease course, where it is difficult to definitively distinguish between Crohn's disease and ulcerative colitis based on clinical, endoscopic, and histological features.
Esophageal, Stomach & Upper GI Disorders
- Dysphagia (Difficulty Swallowing) & Odynophagia (Painful Swallowing): Symptoms requiring investigation to determine underlying causes, which can range from structural abnormalities and motility disorders to inflammatory conditions or tumors.
- Barrett's Esophagus & Dysplasia Monitoring: A precancerous condition in which the normal lining of the esophagus is replaced with tissue similar to the intestinal lining, often due to chronic GERD, requiring regular surveillance for dysplasia (abnormal cells).
- Eosinophilic Esophagitis (EoE): A chronic immune system disease characterized by a buildup of eosinophils (a type of white blood cell) in the esophagus, causing inflammation, difficulty swallowing, food impaction, and chest pain.
Liver, Gallbladder, Bile Duct & Pancreatic Disorders
- Gallstone Disease (Cholelithiasis), Cholecystitis & Choledocholithiasis: Formation of hardened deposits (gallstones) in the gallbladder. Cholecystitis is gallbladder inflammation. Choledocholithiasis refers to gallstones in the common bile duct.
- Cirrhosis & Management of Its Complications (Ascites, Varices, Encephalopathy): Advanced stage of liver scarring (fibrosis) impairing liver function, leading to complications such as fluid accumulation in the abdomen (ascites), enlarged veins that can bleed (varices), and brain dysfunction (hepatic encephalopathy).
This list is not exhaustive. For personalized advice regarding your specific digestive condition, please consult with Dr. Katherine Marchut.
- Personalized Nutritional Assessment & Medical Dietary Therapy for GI Conditions: Evaluation of nutritional status and provision of evidence-based dietary advice and medical nutrition therapy tailored to specific gastrointestinal disorders like IBD, IBS, celiac disease, eosinophilic esophagitis, gastroparesis, or food intolerances, often in collaboration with registered dietitians.
- Second Opinion Consultations for Complex Digestive Diseases: Providing expert second opinions on challenging or rare gastrointestinal diagnoses, unclear test results, and proposed complex treatment plans, including for IBD, liver disease, and pancreatic disorders.
- Capsule Endoscopy (Small Bowel & Colon): Non-invasive procedure where the patient swallows a vitamin-pill sized camera that takes pictures of the small intestine (for obscure GI bleeding, Crohn's disease) or colon (as an alternative to colonoscopy in select cases).
- Endoscopic Hemostasis for Acute & Chronic GI Bleeding: Various endoscopic techniques (e.g., injection therapy, thermal coagulation/APC, mechanical clips, hemostatic sprays) used to stop acute or recurrent bleeding from ulcers, varices, angiodysplasias, or tumors in the GI tract.
- Flexible Sigmoidoscopy with Biopsy: Examination of the lower part of the colon (sigmoid colon and rectum) using a flexible sigmoidoscope, often for evaluation of rectal bleeding, diarrhea, or as part of some screening protocols.
- Management of Functional Dyspepsia & Functional Abdominal Pain Syndrome: Diagnosis and management of chronic upper abdominal pain or discomfort (dyspepsia) or generalized abdominal pain without an identifiable structural cause, often involving lifestyle, dietary, and neuromodulator therapies.
- Chromoendoscopy & Advanced Imaging Techniques (e.g., NBI, FICE): Use of special dye sprays (chromoendoscopy) or electronic light filters (Narrow Band Imaging, Fuji Intelligent Chromo Endoscopy) during endoscopy to enhance visualization of mucosal patterns and improve detection of subtle lesions or precancerous changes.
Note: This list provides a general overview. Specific procedures and treatments are determined after a thorough evaluation. Discuss with Dr. Marchut for care relevant to your specific condition.
All medical and surgical services (if applicable) are provided in accordance with the standards of practice set by the Collège des médecins du Québec (CMQ) and relevant gastroenterological care guidelines. Contact the clinic or your referring physician regarding new patient intake and referral processes.
Hôpital Cité-de-la-Santé , Dép de Gastro-entérologie is situated in Laval's Chomedey North neighborhood, serving as a key medical facility within the hospital. The practice is conveniently located near Centropolis, a popular entertainment and dining district, providing a vibrant environment for patients. Public transit options are accessible via the Société de transport de Laval (STL), ensuring easy travel for those using buses. The facility is wheelchair accessible, and paid parking options are conveniently located nearby, making it accessible for all patients seeking specialized digestive health care in Laval.
- Are consultations and procedures like endoscopies with Dr. Marchut, a Gastroenterologist, covered by Régie de l'assurance maladie du Québec (RAMQ) in QC?
- Medically necessary consultations with a licensed Gastroenterologist like Dr. Marchut, as well as most diagnostic procedures (e.g., endoscopies for investigating symptoms, biopsies for medical reasons) and treatments for provincially insured digestive conditions (e.g., IBD, celiac disease, screening colonoscopies as per provincial guidelines, liver disease management), are generally covered by Régie de l'assurance maladie du Québec (RAMQ) in QC when a referral from a family doctor or another specialist is in place. Procedures considered purely for screening outside of guidelines, or for non-medical reasons, and some advanced technologies or specific drug therapies might have different coverage. It's crucial to discuss coverage specifics for any proposed treatment or procedure with Dr. Marchut's office, the hospital/clinic's financial services, or Régie de l'assurance maladie du Québec (RAMQ) beforehand.
- Do I need a referral from my family doctor to see Dr. Marchut, a Gastroenterologist?
- Yes, in nearly all cases, a referral from your family physician or another specialist (such as an internist or surgeon) is required to schedule an appointment with a Gastroenterologist like Dr. Marchut for services covered by the provincial health plan. Gastroenterological issues often require initial assessment and preliminary investigations by your primary care provider. The referral ensures that a specialist consultation is appropriate, helps with prioritizing appointments, and facilitates coordinated care, including the transfer of relevant medical information.
- How does a Gastroenterologist like Dr. Marchut approach the management of Inflammatory Bowel Disease (IBD)?
- The management of IBD (Crohn's disease and ulcerative colitis) by a Gastroenterologist like Dr. Marchut is a highly individualized and long-term process. The primary goals are to induce and then maintain remission (control inflammation), alleviate symptoms, prevent complications, and improve the patient's overall quality of life. Treatment strategies often involve a combination of medications, which can include aminosalicylates (5-ASAs), corticosteroids (for acute flare-ups), immunomodulators (e.g., azathioprine, methotrexate), and increasingly, biologic therapies or small molecule drugs that target specific inflammatory pathways. Regular monitoring through clinical assessment, blood tests, stool tests (like fecal calprotectin), and endoscopic procedures is crucial to track disease activity and adjust treatment as needed. Nutritional counseling and lifestyle advice are also integral parts of comprehensive IBD care.
- How does Dr. Marchut approach treating functional GI disorders like IBS or functional dyspepsia?
- Treating functional GI disorders like Irritable Bowel Syndrome (IBS) or functional dyspepsia often involves a multi-faceted approach tailored by Dr. Marchut to your specific symptoms and triggers. Since these conditions don't have a structural cause seen on tests, management focuses on symptom relief and improving quality of life. This may include dietary modifications (like identifying trigger foods or trying a low FODMAP diet for IBS), lifestyle adjustments (stress management, regular exercise), fiber supplements, over-the-counter remedies, and prescription medications. Medications can target specific symptoms like pain (antispasmodics), diarrhea (anti-diarrheals), constipation (laxatives), or abnormal gut-brain interaction (neuromodulators in low doses). She will work with you to find the most effective combination of strategies.
- What's the difference between Irritable Bowel Syndrome (IBS) and Inflammatory Bowel Disease (IBD)? Can Dr. Marchut diagnose and treat both?
- Yes, a Gastroenterologist like Dr. Marchut can diagnose and treat both IBS and IBD, but they are very different conditions. IBD, which includes Crohn's disease and ulcerative colitis, is characterized by chronic inflammation and physical damage (like ulcers and strictures) to the digestive tract, visible during endoscopy and on biopsies. It's an autoimmune-related condition. IBS, on the other hand, is a functional gut disorder, meaning the GI tract doesn't work correctly, but there's no visible inflammation or damage on standard tests. IBS causes symptoms like abdominal pain, bloating, and altered bowel habits. While IBS can significantly impact quality of life, it doesn't cause the destructive inflammation seen in IBD. Diagnosis involves different criteria and investigations for each.
Hôpital Cité-de-la-Santé , Dép de Gastro-entérologie
1755 boul René-Laennec
Laval, QC H7M 3L9
Phone: (450) 668-1010 | Fax: (450) 978-8357
The facility is wheelchair accessible.
Dr. Marchut is a licensed Gastroenterologist regulated by the Collège des médecins du Québec (CMQ) under the Medical Act in QC. A referral from a family physician or appropriate specialist is typically required for consultations with Dr. Marchut for services covered by the provincial health plan.
Verify registration with the Collège des médecins du Québec (CMQ): https://www.cmq.org/en/directory/physicians?number=14489