Dr. Ioannis Bolanis

Specialist Colorectal Surgeon
Director of Surgery Clinic for Colorectal and Anal Diseases
Athens Medical Center

Modern painless treatments for bowel and anal diseases such as hemorrhoids, periosteal fistula, anal fissure, coccyx cyst with Laser. Specialization in Colon and Rectal Cancer without colostomy (sphincter preservation without a natural seat). He has many years of experience in applying sphincter-preserving techniques such as Intersphincteric - pull through - TME procedures to avoid both permanent and temporary colostomy in rectal cancer. Special expertise in sphincter repair and rescue operations in cases of complicated peroneal fistulas or sphincter injuries.

Dr. Ioannis Bolanis — Colorectal Surgeon
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Welcome!

A few words about the clinic

Dr. Ioannis Bolanis is a specialized colorectal surgeon with over 25 years of clinical experience. It applies the most modern minimally invasive techniques — Laser LHP®, FiLaC®, laparoscopic surgery.

It specializes in maintaining the sphincter in rectal cancer, eliminating in most cases the need for a foreign seat (colostomy).

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Purpose of the clinic

Immediate, effective treatment with the most modern methods, minimal pain, quick return to activities.

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Diseases of the anus

Hemorrhoids, stretch marks, fistulas, abscess, coccyx cyst, warts, incontinence.

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Colon & rectal diseases

Colon-rectal cancer, ulcerative colitis, Crohn's disease, polyps, diverticula.

General surgery

Hernias, cholelithiasis, appendicitis — laparoscopically where applicable.

See Biography →
Specialized Services

Surgical Treatments & Diseases

Innovative minimally invasive techniques to solve your problem immediately.

New Techniques

New Announcements

Frequently Asked Questions & Answers

Expert Surgical Answers

Be informed responsibly about the modern techniques for dealing with hemorrhoids, perineal fistula, colon cancer and rectal cancer without permanent colostomy.

How are hemorrhoids treated painlessly with LHP® Laser? ▼

Laser Hemorrhoidoplasty (LHP®) with Laser LHP® (Laser Hemorrhoidoplasty (LHP®)) is the most modern minimally invasive treatment for hemorrhoids. Through a thin optical fiber laser, energy is channeled into the inside of the hemorrhoidal nodule, causing it to shrink and invert.

  • No incisions & no stitches: Keeps the rectal mucosa intact.
  • Minimal postoperative pain: The patient returns to daily activities in 24-48 hours.
  • Sphincter protection: Anal continence is not affected.

Learn more about laser hemorrhoid treatment →

How is periodontal fistula treated with FiLaC® laser without risk of incontinence? ▼

The periosteal fistula is treated with the FiLaC® (Fiber-optic Laser in Fistula-in-Ano) method. A flexible optical fiber laser is inserted into the fistula duct and emits energy 360 degrees, sealing the duct from the inside.

  • Full sphincter retention: The sphincter muscles are not crossed, eliminating the risk of incontinence.
  • Fast healing: No open wounds or daily gauze changes.
  • High success rates: Ideal method also for recurrent cervical fistulas.

See in detail the FiLaC® method for pericardial fistula →

How is rectal cancer treated without permanent colostomy? ▼

Rectal cancer without permanent colostomy (without a permanent but natural site) is possible nowadays thanks to advanced specialized sphincter salvage surgical techniques such as ISR (Intersphincteric Resection) and Ultra-Low Anterior Resection (ULAR).

  • Oncological radicalization: Complete removal of the tumor with clear surgical margins and total mesorectal debridement (TME).
  • Maintaining a natural voiding route: Avoiding a permanent bag (colostomy) even in tumors very close to the sphincter.
  • Multidisciplinary approach: Combination of preoperative radio-chemotherapy where required to shrink the tumor.

Read the studies & techniques for rectal cancer without colostomy →

What are the advantages of laparoscopic surgery in colon cancer? ▼

Colon cancer is treated with laparoscopic and robotic colectomy, offering significant advantages over open surgery.

  • Minimal trauma: It is carried out through 4-5 small holes of a few millimeters.
  • Reduced pain & rapid recovery: The patient is fed and mobilized from the 1st Postoperative day.
  • Excellent oncology result: HD/4K image magnification for more precise lymph node cleansing.

Learn more about colon cancer & laparoscopic colectomy →

📹 Videotaped Operations

See Instructional Videos of Procedures

Real surgical techniques Laser & Laparoscopy with commentary by Dr. Bolani

Rectal Cancer – The Role of the Surgeon (2025)

Speech by Dr. Bolt: Clamp save & survivability increase

Rectal Cancer – ISR Clamp Rescue

Intersphincteric Resection technique for rectal cancer

Hemorrhoids – Laser LHP® Laser Hemorrhoidoplasty (LHP®)

New treatment of hemorrhoids with optical fiber laser

Hemorrhoids & Stretch Marks – Laser Treatment

Combined treatment of hemorrhoids and stretch marks with laser

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