20+ years
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Gallstones, or mga bato sa apdo, are solid deposits that develop within the gallbladder, a small organ located beneath the liver that stores bile. These stones may range from tiny particles to larger stones capable of obstructing the flow of bile.

They can form from different substances found in bile, such as:

  • Cholesterol gallstones – the majority of gallstones belong to this group. They occur when cholesterol levels in bile become disproportionately high, causing crystals to form and gradually develop into stones
  • Pigment gallstones – these stones are formed from bilirubin, a natural waste product generated when the body breaks down old red blood cells. When bilirubin concentrations become elevated, it can accumulate and harden into dark-coloured stones within the gallbladder

Many people with gallstones never develop symptoms and may only discover them incidentally during an ultrasound examination performed for another reason. However, when gallstones block the gallbladder or bile ducts, they can cause episodes of abdominal pain and potentially serious complications.

What causes gallstones? 

Gallstones develop when substances normally dissolved in bile begin to crystallise and form solid particles within the gallbladder. This process may occur through several mechanisms:

  • Genetic factors – inherited differences in bile metabolism may increase susceptibility to stone formation
  • Excess cholesterol within bile – cholesterol can crystallise when present in concentrations that exceed the bile's ability to keep it dissolved 
  • Increased bilirubin levels – certain blood and liver conditions can increase bilirubin production, contributing to pigment stone formation 
  • Incomplete gallbladder emptying – bile that remains stagnant in the gallbladder for prolonged periods may promote stone development 
  • Changes in bile composition – imbalances between bile salts, cholesterol and other substances can encourage crystallisation 
  • Hormonal influences – hormones such as oestrogen may alter bile chemistry and gallbladder function 

What are the symptoms of gallstones?

Dr Aaron Poh

Consultant Surgeon
& Colorectal Specialist
Alpine Surgical Practice · Singapore
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symptoms of gallstones and gallbladder attacks in Filipino patients
Gallstones may remain silent for years, but blockage of the gallbladder can trigger severe abdominal pain and digestive symptoms.

Some individuals never experience symptoms. When symptoms occur, they may include:

  • Pain in the upper abdomen, particularly after meals
  • Pain that radiates to the upper back
  • Bloating or indigestion
  • Episodes of pain that come and go

When should you seek urgent medical attention?

Seek prompt medical attention if abdominal pain is severe, persists for several hours or occurs with:

  • Fever or chills
  • Persistent nausea or vomiting
  • Yellowing of the skin or eyes
  • Dark urine or pale stools
  • Increasing abdominal tenderness

These symptoms may indicate gallbladder inflammation, infection, bile duct obstruction or pancreatitis.

Who is at risk of developing gallstones?

Although gallstones can affect anyone, certain factors increase the likelihood of developing them. These include:

  • Increasing age – gallstones become more common as bile composition and gallbladder function change over time
  • Female gender – hormonal factors increase the likelihood of gallstone formation
  • Family history of gallstones – inherited factors may increase susceptibility
  • Certain medical conditions – being diagnosed with certain conditions such as cirrhosis of the liver, blood disorders or Crohn’s disease increases the likelihood of gallstones
  • Pregnancy and multiple pregnancies – hormonal changes and reduced gallbladder emptying may promote stone development
  • Diabetes – metabolic changes may affect gallbladder function and bile composition
  • Rapid weight loss – sudden changes in fat metabolism can alter bile chemistry and increase stone formation
  • High-fat dietary patterns – dietary habits associated with obesity and metabolic disease may contribute indirectly to gallstone development
  • Sedentary lifestyle – reduced physical activity has been associated with a higher risk of gallstone disease
  • Obesity – excess body weight is associated with increased cholesterol levels within the bile

What complications can gallstones cause?

complications of gallstones, including cholecystitis, jaundice and pancreatitis.
Untreated gallstones may lead to infection, bile duct blockage or inflammation affecting nearby organs.

While some gallstones remain harmless, others may cause complications requiring urgent treatment, including:

  • Biliary colic – repeated episodes of gallbladder pain caused by temporary blockage 
  • Acute cholecystitis – inflammation or infection of the gallbladder 
  • Choledocholithiasis – gallstones that migrate into the common bile duct 
  • Obstructive jaundice – blockage of bile flow causing yellowing of the skin and eyes 
  • Cholangitis (link to page) – infection of the bile ducts 
  • Gallstone pancreatitis – inflammation of the pancreas caused by stone obstruction 
  • Gallbladder perforation – a rare but serious complication of severe inflammation 

Gallstones vs gastritis: How do the symptoms differ?

Gallstones and gastritis can both cause upper abdominal discomfort, nausea and symptoms after eating. However, the location and pattern of pain may provide useful clues. Symptoms alone cannot confirm the cause, so recurring or severe pain should be medically assessed.

FEATURE

GALLSTONES

GASTRITIS

Typical pain location

Upper right or upper central abdomen

Upper central abdomen, below the breastbone

How the pain feels

Intense, steady pain that may become severe

Burning, aching or gnawing discomfort

Common triggers

Often begins after a heavy or fatty meal, although attacks may occur at other times

May worsen after eating, on an empty stomach, or after alcohol or certain medications

Duration

Usually lasts from around 30 minutes to several hours

May be brief or persist intermittently for days or longer

Pain spreading elsewhere

May radiate to the right shoulder or between the shoulder blades

Usually remains in the upper central abdomen

Other possible symptoms

Nausea, vomiting and sweating during an attack

Nausea, bloating, belching, reduced appetite or feeling full quickly

Gallstone attacks typically cause steady upper abdominal pain lasting up to several hours, while gastritis more commonly causes burning or gnawing discomfort. However, the symptoms can overlap, so the difference cannot be determined confidently from pain location alone.

How are gallstones diagnosed in Singapore?

Some patients travelling from the Philippines may already have an ultrasound report showing gallstones, while others may have experienced recurring abdominal pain without receiving a definitive diagnosis.

Assessment generally includes:

  • Clinical history and symptom review – assessment begins with a discussion of symptom patterns, including the location of pain, triggering factors, duration of attacks and any associated symptoms such as fever, jaundice or digestive disturbances
  • Physical examination – examination may identify abdominal tenderness, particularly over the right upper abdomen, and assess for signs of infection or complications
  • Blood investigations – blood tests may evaluate liver function, infection, inflammation and possible bile duct obstruction
  • Abdominal ultrasound – ultrasound is usually the first-line imaging investigation and is highly effective for detecting gallstones and signs of gallbladder inflammation
  • Computed Tomography (CT) scan – CT imaging may be recommended when complications such as perforation, pancreatitis or abscess formation are suspected
  • Magnetic Resonance Cholangiopancreatography (MRCP) – MRCP uses specialised MRI imaging to assess the bile ducts and identify stones that may have migrated beyond the gallbladder

How are gallstones treated in Singapore?

gallstone treatment and gallbladder surgery Singapore
Treatment depends on whether gallstones are causing symptoms, complications or bile duct obstruction.

Treatment depends on symptom severity and whether complications are present.

  • Observation – gallstones that are not causing symptoms may not require immediate treatment. Monitoring may be appropriate unless symptoms or complications develop.
  • Medical management – pain relief and hydration may be provided during an acute attack. Antibiotics may be prescribed when an infection is suspected.
  • Endoscopic treatment – Endoscopic Retrograde Cholangiopancreatography (ERCP) may be used to remove gallstones that have moved into the common bile duct. It does not remove stones remaining inside the gallbladder.
  • Cholecystectomy (link to page) – surgical removal of the gallbladder is the usual definitive treatment for symptomatic gallstones. Laparoscopic cholecystectomy is commonly performed to help prevent recurring attacks and complications.
  • Lifestyle adjustments – dietary and lifestyle changes cannot remove existing gallstones. However, maintaining a healthy weight, eating a balanced diet and avoiding rapid weight loss may help reduce the risk of further stone formation.

Why is the gallbladder removed instead of only the stones?

Illustration showing small abdominal incisions, laparoscopic instruments and removal of the gallbladder during keyhole surgery
Laparoscopic gallbladder removal is performed through several small abdominal incisions using a camera and specialised surgical instruments.

During a cholecystectomy, the surgeon removes the gallbladder together with the stones inside it. Removing only the stones would leave the gallbladder in place, allowing stones and related symptoms to develop again.

The procedure is commonly performed using laparoscopic, or keyhole, surgery. Small incisions are made in the abdomen so that the gallbladder can be separated and removed using specialised instruments. Open surgery may be required in selected situations, such as when severe inflammation, infection or scarring makes laparoscopic removal unsuitable.

The body can continue to digest food without a gallbladder. After surgery, bile flows directly from the liver into the small intestine rather than being stored in the gallbladder.

How long does recovery take after gallbladder surgery?

Many patients can return home on the same day or after an overnight stay following laparoscopic gallbladder removal. Light activities can be resumed gradually, while returning to work commonly takes around 1 to 2 weeks. Recovery may take longer after open surgery or if complications occur.

If you are travelling from the Philippines, discuss your return date with Dr Aaron Poh before booking your flight. Your recommended stay in Singapore will depend on your recovery and whether a postoperative review is needed.

Planning your visit from the Philippines

For patients travelling from the Philippines, arrangements can often begin before arriving in Singapore.

Online consultation

A teleconsultation with Dr Aaron Poh may be arranged before travel. This allows your symptoms, medical history and previous investigations to be reviewed in advance so that any necessary assessments can be planned ahead of your visit.

Having this information reviewed early may help make your time in Singapore more focused and efficient.

To prepare for your consultation, it may be helpful to have:

  • A summary of your symptoms and when they began
  • Previous ultrasound, CT scan or MRI reports
  • Blood test results, particularly liver function tests
  • Hospital discharge summaries (if previously admitted)
  • A list of current medications
  • Questions you would like to discuss with Dr Aaron Poh

Coordination and travel support

The Alpine Surgical practice team can assist with coordinating consultations, investigations and follow-up appointments within your intended travel period. Patients are encouraged to contact the clinic before travelling so that arrangements can be planned around their schedule and anticipated length of stay.

Your care experience at Alpine Surgical Practice

gallstone treatment and gallbladder surgery in Singapore
Laparoscopic gallbladder removal is performed through several small abdominal incisions using a camera and specialised surgical instruments.

Gallstone symptoms can range from occasional discomfort to repeated painful attacks that interfere with work, travel and daily routines. For many patients, the main concern is not only the symptoms themselves, but also whether surgery is necessary and what could happen if treatment is delayed.

At Alpine Surgical Practice, Dr Aaron Poh will review your symptoms, medical history and previous scans to determine whether monitoring, further investigation or treatment may be appropriate. Additional tests can also be arranged when needed to assess the gallbladder and bile ducts more closely.

If you are travelling from the Philippines, arrange a consultation to discuss the recommended next steps and coordinate your care around your intended stay in Singapore.

Frequently Asked Questions (FAQs)

Everything you need to know about your medical journey
Many patients seek specialist evaluation after recurrent abdominal pain, suspected gallbladder attacks or unclear ultrasound findings. In Singapore, assessment, imaging and treatment planning can often be streamlined within a single coordinated care pathway.
Gallstones typically cause right upper abdominal pain that may radiate to the back or shoulder, often triggered by fatty meals. Gastritis usually causes central upper abdominal discomfort related to meals, stress or medication use.
A gallstone attack typically causes sudden, intense and steady pain in the upper right or upper central abdomen. The pain may last from around 30 minutes to several hours and may be accompanied by nausea, vomiting or sweating.
Gallstone pain is usually felt in the right upper part of the abdomen, just beneath the rib cage. In some cases, the discomfort may spread to the central abdomen or radiate towards the back.
Yes, gallstone-related pain may radiate to the right shoulder or between the shoulder blades due to referred pain from shared nerve pathways around the diaphragm.
A gallstone attack may last from 30 minutes to several hours. Persistent pain, or pain associated with fever or jaundice, may suggest complications and should be assessed promptly.
Yes, some patients experience intermittent abdominal discomfort, bloating or indigestion even without serious blockage or infection. Others may remain completely symptom-free.
No fixed size automatically requires surgery. Treatment decisions depend more on symptoms, frequency of attacks and complications rather than stone size alone. Even small stones may require removal if they cause obstruction or repeated pain episodes.
Surgery is usually recommended when gallstones cause recurrent pain, gallbladder inflammation, bile duct obstruction, pancreatitis or other complications that affect digestive function or overall health.
Most patients return to light daily activities within 1 to 2 weeks after laparoscopic gallbladder surgery. Full recovery typically takes around 3 to 4 weeks, depending on individual healing and the complexity of the procedure.
While not all gallstones can be prevented, maintaining a healthy weight, eating a balanced diet and avoiding rapid weight loss may help reduce risk.

Dr Aaron Poh

Consultant Surgeon & Colorectal Specialist
Alpine Surgical Practice · Singapore
Meet our doctor

About Dr Aaron Poh

Dr Aaron Poh is a fully accredited General Surgeon with dual subspecialties in Colorectal Surgery and Trauma Surgery, recognised by Singapore’s Specialist Accreditation Board and Ministry of Health. He is the Medical Director of Alpine Surgical Practice, with clinics located at Mount Elizabeth Hospital, Parkway East Hospital, and Farrer Park Hospitals.

Dr Aaron Poh has extensive experience, having performed over 5,000 endoscopic procedures. He is a strong advocate for early detection through colonoscopy, particularly for individuals at risk of colorectal cancer. His expertise includes advanced endoscopic techniques such as Endoscopic Mucosal Resection (EMR) for complex polyps and colonic stenting for obstructed cancers, which help patients avoid major emergency surgery.

When surgery is required, he specialises in minimally invasive laparoscopic colorectal cancer surgery, offering patients faster recovery with less pain and scarring. In addition to cancer care, he manages a wide range of anal conditions including haemorrhoids, fistulas, fissures, and abscesses, providing comprehensive colorectal treatment.

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