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:
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.
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:


Some individuals never experience symptoms. When symptoms occur, they may include:
Seek prompt medical attention if abdominal pain is severe, persists for several hours or occurs with:
These symptoms may indicate gallbladder inflammation, infection, bile duct obstruction or pancreatitis.
Although gallstones can affect anyone, certain factors increase the likelihood of developing them. These include:

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

Treatment depends on symptom severity and whether complications are present.

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

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.
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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