Diagnostic & Therapeutic Colonoscopy and Flexible Sigmoidoscopy (JAG Accredited)
Ligasure Haemorrhoidectomy
LIFT and VAAFT procedure for fistula-in-ano
Laproscopic (Keyhole) groin and abdominal hernia repair & Abdominal wall reconstruction
Minimal access/ Laproscopic surgery
Day-case pilonidal sinus treatment
other common treatments offered:
Haemorrhoids, Fistula-in-Ano, Fissure-in-Ano, Pilonidal sinus, Groin hernias, Colorectal cancer, Inflammatory bowel disease - Crohn's disease, Ulcerative colitis
Dr. Oliver Warren is a distinguished Consultant Colorectal and Hernia Surgeon based in London, UK, with over two decades of experience in the medical field. He currently serves as the Clinical Director of Surgery at Chelsea and Westminster Hospital and holds an Honorary Senior Lectureship at Imperial College London's Department of Surgery and Cancer.
Educational Background and Fellowships
Dr. Warren graduated with honors from Imperial College London in 2001, earning top distinctions in both medicine and surgery. He completed his Doctorate in 2009 at the same institution. In 2012, he was awarded the Fellowship of the Royal College of Surgeons, receiving the ASGBI Gold Medal for outstanding performance. His postdoctoral training includes esteemed colorectal surgery fellowships at St. Mark's Hospital in London, the Royal Prince Alfred Hospital in Sydney, and a visiting fellowship at the Cleveland Clinic in Ohio, USA.
Clinical Expertise
Dr. Warren specializes in a comprehensive range of colorectal and general surgical procedures, including:
Colorectal Cancer Surgery: Expert in minimally invasive techniques for colorectal cancer treatment.
Inflammatory Bowel Disease (IBD): Management and surgical intervention for conditions like Crohn's disease and ulcerative colitis.
Hernia Repair: Proficient in both open and laparoscopic (keyhole) hernia surgeries, including complex abdominal wall reconstructions.
Proctology: Treatment of anorectal conditions such as haemorrhoids, anal fissures, and fistulas.
Endoscopy: Diagnostic and therapeutic procedures, including colonoscopy and flexible sigmoidoscopy.
Professional Affiliations
Dr. Warren is an active member of several professional organizations, including:
Research and Publications
With over 100 peer-reviewed publications and book chapters, Dr. Warren has significantly contributed to medical literature on topics such as colorectal and hernia surgery, medical leadership, patient safety, and surgical education. In 2015, he authored the book "Going into Hospital? A guide for patients, carers, and families," aiming to engage patients in their healthcare journey.
Consultation and Contact Information
Dr. Warren offers consultations at several prestigious London locations:
Patient Testimonials
Dr. Warren is highly regarded by both patients and colleagues. He maintains a patient satisfaction rating of 4.98 out of 5, based on 36 reviews. Colleagues commend his excellent communication skills and surgical expertise.
Dr. Oliver Warren's extensive experience, commitment to patient care, and active involvement in surgical advancements make him a leading colorectal and hernia surgeon in London.
BSc (Hons), MBBS (Hons), MD (Res.), FRCS (Gen.Surg.)
English
The Rafaelo Procedure is a minimally invasive treatment for internal haemorrhoids that utilizes radiofrequency energy to shrink and eliminate symptomatic haemorrhoidal tissue. This outpatient procedure is typically performed under local anaesthesia, allowing for a quicker recovery and less postoperative discomfort compared to traditional surgical methods.
During the procedure, a specialized proctoscope is used to access the haemorrhoid. Local anaesthetic is administered to numb the area, and a radiofrequency probe is inserted into the haemorrhoidal tissue. The application of radiofrequency energy causes the haemorrhoid to heat up, leading to coagulation and subsequent shrinkage. As the treated haemorrhoid shrinks, any associated external components are typically pulled back into the anal canal, reducing symptoms.
Minimally Invasive: The procedure does not require general anaesthesia and is less invasive than traditional haemorrhoidectomy.
Quick Recovery: Patients often experience a faster return to normal activities, with many resuming work the following day.
Reduced Pain: The procedure typically results in less postoperative pain compared to conventional surgical treatments. onewelbeck.com
While generally safe, potential risks include minor bleeding, temporary urgency to defecate, and, in rare cases, infection or anal fissure. Most patients experience minimal discomfort, and complications are uncommon.
The Rafaelo Procedure is primarily effective for internal haemorrhoids.
A thorough clinical assessment is necessary to determine suitability, as external haemorrhoidal components may not respond directly to this treatment.
Consultation with a qualified colorectal surgeon is essential to evaluate individual cases and discuss alternative treatment options if necessary.
For personalized advice and to determine if the Rafaelo Procedure is appropriate for your condition,
please consult with Dr. Oliver Warren or a qualified colorectal specialist.
Post-procedure, patients may experience mild discomfort and a sensation of urgency to defecate, typically resolving within 48 hours. Normal activities can usually be resumed promptly, and any minor bleeding or spotting is considered normal during the initial recovery period.
The Haemorrhoidal Artery Ligation Operation (HALO) is a minimally invasive surgical technique designed to treat haemorrhoids (commonly known as piles) by reducing their blood supply, leading to shrinkage and alleviation of symptoms such as bleeding and prolapse.
During the HALO procedure, a Doppler ultrasound probe is used to accurately locate the arteries supplying blood to the haemorrhoids. Once identified, these arteries are ligated (tied off) using sutures, effectively cutting off the blood flow to the haemorrhoidal tissue. This reduction in blood supply causes the haemorrhoids to shrink and symptoms to improve.
Minimally Invasive: The procedure does not involve cutting or removing tissue, resulting in less postoperative pain compared to traditional haemorrhoidectomy.colorectalcentre.co.uk
Quick Recovery: Most patients can resume normal activities within 24 to 48 hours after the procedure.
Effective Symptom Relief: The procedure effectively reduces symptoms such as bleeding, discomfort, and prolapse associated with haemorrhoids.
While the HALO procedure is generally safe, potential risks include:
Bleeding: Some patients may experience bleeding during or after the procedure.
Pain or Discomfort: Mild to moderate pain or discomfort in the anal area is common post-procedure but typically resolves within a few days.
Infection: As with any surgical procedure, there is a minimal risk of infection.
It's important to discuss these risks with your surgeon prior to the procedure.
The HALO procedure is primarily recommended for patients with grade II and III haemorrhoids, characterized by bleeding and prolapse that may require manual reduction. A thorough evaluation by a qualified colorectal surgeon is essential to determine the most appropriate treatment plan based on individual circumstances.
For personalized advice and to determine if the HALO procedure is appropriate for your condition,
please consult with Dr. Oliver Warren or a qualified colorectal specialist.
After the HALO procedure, patients may experience mild discomfort, a sensation of fullness in the rectum, or an urge to defecate. These sensations typically subside within a few days. It's advisable to maintain a high-fiber diet and stay hydrated to ensure soft stools and avoid straining during bowel movements. Most patients can return to their normal activities within a couple of days, although individual recovery times may vary.
