Single‑Incision Laparoscopic Cholecystectomy (SILS): Scarless Gallbladder Surgery
- What is single‑incision laparoscopic cholecystectomy (SILS)?
- How SILS works – the hidden scar
- Advantages over standard laparoscopic cholecystectomy
- Disadvantages and limitations
- SILS vs standard laparoscopic – comparison table
- Who is a candidate for SILS?
- Cost of SILS in India
- Interactive FAQ – 9 common questions
What is single‑incision laparoscopic cholecystectomy (SILS)?
Single‑incision laparoscopic cholecystectomy (SILS), also known as single‑port or scarless gallbladder surgery, is a minimally invasive technique that removes the gallbladder through a single small incision, typically hidden inside the belly button (umbilicus). Unlike standard laparoscopic cholecystectomy (which uses 3‑4 separate incisions), SILS uses only one incision. The scar is virtually invisible once healed, offering superior cosmetic results. However, SILS is technically more challenging and not suitable for all patients.
How SILS works – the hidden scar
- Incision: A single 2‑3cm incision is made inside the belly button (umbilicus).
- Port placement: A special multi‑channel port (or multiple ports through the same incision) is inserted. This allows passage of a laparoscope (camera) and two or three instruments simultaneously.
- Carbon dioxide insufflation: Gas is pumped in to create working space.
- Dissection: The surgeon uses curved or articulating instruments to dissect Calot’s triangle, clip the cystic duct and artery, and remove the gallbladder.
- Extraction: The gallbladder is removed through the same umbilical incision.
- Closure: The incision is closed with absorbable sutures, leaving no visible external scar.
Operative time: 45‑90 minutes (longer than standard laparoscopy due to instrument crowding and technical difficulty).
Advantages over standard laparoscopic cholecystectomy
- Superior cosmetic result: The single incision is hidden in the belly button, leaving no visible abdominal scars. Ideal for patients concerned about scarring.
- Potentially less post‑operative pain? Some studies suggest less incisional pain, but data are mixed. Most patients report similar pain levels.
- Reduced risk of incisional hernia? The umbilical incision may have a lower hernia rate than multiple port sites, but evidence is not conclusive.
- Psychological benefit: Patients who value “scarless” surgery may have higher satisfaction.
Disadvantages and limitations
- Technically more difficult: Instruments crowd through a single incision, leading to “sword fighting” (clashing of instruments). Surgeons require specialised training.
- Longer operative time: Typically 15‑30 minutes longer than standard laparoscopy, increasing anaesthesia risk and cost.
- Higher conversion rate: SILS may need to convert to standard laparoscopy (adding more ports) or open surgery more often than standard laparoscopy.
- Limited visualisation: The laparoscope and instruments enter from the same direction, reducing triangulation.
- Not suitable for complex cases: Severe inflammation, obesity, previous abdominal surgeries, or very large gallstones are relative contraindications.
- Higher cost: Specialised ports and articulating instruments are more expensive.
SILS vs standard laparoscopic – comparison table
| Feature | Single‑incision (SILS) | Standard laparoscopic (4 ports) |
|---|---|---|
| Number of incisions | 1 (umbilical) | 3‑4 small incisions |
| Scar visibility | Hidden in belly button – virtually invisible | Small visible scars (fade over time) |
| Operative time | 45‑90 minutes | 30‑60 minutes |
| Post‑operative pain | Similar or slightly less | Mild to moderate |
| Hospital stay | 0‑1 day | 0‑1 day |
| Recovery time | Same as standard | Same |
| Conversion to open rate | Slightly higher | 2‑5% |
| Cost (India) | ₹60,000 – 90,000 | ₹40,000 – 70,000 |
Who is a candidate for SILS?
Ideal candidates for SILS have:
- Uncomplicated gallstones (no acute cholecystitis, pancreatitis, or jaundice).
- Normal BMI or mild obesity (BMI <35).
- No previous upper abdominal surgery (adhesions increase difficulty).
- No large stones (>2‑3cm) that may be difficult to extract through the umbilical incision.
- Strong desire for minimal scarring (e.g., models, bodybuilders, or patients with keloid tendency).
Patients with acute cholecystitis, severe obesity, or complex anatomy are not good candidates – standard laparoscopy is safer.
Cost of SILS in India
Single‑incision laparoscopic cholecystectomy is more expensive due to specialised instruments and longer operative time:
- SILS cholecystectomy: ₹60,000 – 90,000
- Standard laparoscopic cholecystectomy (same hospital): ₹40,000 – 70,000
- Insurance coverage: Most policies cover SILS if medically indicated (cosmetic preference may not be reimbursed). Check with your insurer.
At Vivekananda Hospital, we offer SILS for select patients who meet the criteria and desire scarless surgery. Most patients, however, choose standard laparoscopy due to lower cost and proven safety.
Interactive FAQ – Single‑incision laparoscopic cholecystectomy
The incision is made inside the belly button, so the scar is hidden and not visible externally. However, there is still a scar – it is just not noticeable.
Studies show similar pain levels. Some patients report less incisional pain because there is only one incision, but the larger umbilical incision may cause more discomfort.
Recovery is the same as standard laparoscopy – most patients return to desk work in 1‑2 weeks and full activity in 3‑4 weeks.
Not recommended. Inflamed gallbladders are more difficult to remove through a single incision, and the risk of conversion is high. Standard laparoscopy is safer.
Most insurers cover it, but may require pre‑authorisation. Some policies may only reimburse up to the standard laparoscopic rate if SILS is considered cosmetic.
SILS uses a single incision with standard or articulating laparoscopic instruments. Robotic cholecystectomy uses a robotic system with multiple ports (usually 4). Both are minimally invasive but different technologies.
Mild obesity (BMI 30‑35) may be acceptable, but severe obesity (BMI >35) is a relative contraindication due to technical difficulty and higher complication rates.
At Vivekananda Hospital, we have performed over 200 SILS cholecystectomies with excellent outcomes. However, we still recommend standard laparoscopy for most patients due to proven safety and cost.
Rarely. The incision is made inside the umbilicus, and careful closure preserves the natural shape. Some patients may have mild flattening, but this is uncommon.
Disclaimer: This information is for educational purposes. Single‑incision cholecystectomy is not suitable for all patients. Consult a surgeon at Vivekananda Hospital to determine the best approach for your case.