Gallstones & Gallbladder Disease Treatment in Dallas, TX

What Are Gallstones?

Gallstones (cholelithiasis) are hardened deposits of digestive fluid that form inside the gallbladder, a small, pear-shaped organ located beneath the liver on the right side of the abdomen. The gallbladder's primary function is to store and concentrate bile — a yellow-green fluid produced by the liver that helps digest fats in the small intestine. When the chemical composition of bile becomes imbalanced, the excess cholesterol, bilirubin, or calcium salts can crystallize and gradually harden into stones ranging in size from a grain of sand to a golf ball.

Gallstone disease is one of the most common gastrointestinal conditions in the United States. According to the American Gastroenterological Association (AGA), approximately 10% to 15% of American adults — an estimated 20 to 25 million people — have gallstones. Each year, roughly 1 million new cases are diagnosed, and gallstone disease accounts for approximately 800,000 hospitalizations and 500,000 cholecystectomies (gallbladder removal surgeries) annually. Despite these numbers, the majority of people with gallstones never develop symptoms; only about 20% of individuals with gallstones will experience a symptomatic episode over their lifetime.

At Texas Gut Health in Sachse, TX, Dr. Jaison John provides comprehensive evaluation and management of gallstone disease and its complications for patients throughout the Dallas-Fort Worth area. Dr. John completed his gastroenterology fellowship at UT Medical Branch, where he served as Chief Fellow, and his internal medicine residency at UT Austin Dell Medical School, where he served as Chief Resident. He holds dual board certifications from the American Board of Internal Medicine in both internal medicine and gastroenterology. His advanced training in ERCP (endoscopic retrograde cholangiopancreatography) allows him to diagnose and treat bile duct stones and other biliary complications without surgery.

Types of Gallstones

Gallstones are classified into two main types based on their composition, and understanding the type can inform both treatment decisions and risk factor assessment.

Cholesterol Gallstones

Cholesterol gallstones are the most common type, accounting for approximately 80% of all gallstones in Western populations. They form when bile contains more cholesterol than bile salts and lecithin can keep dissolved. The excess cholesterol precipitates out of solution and nucleates into crystals, which grow over time into stones. Cholesterol stones are typically yellow-green in color and may be single or multiple. Risk factors strongly associated with cholesterol stones include obesity, female sex, estrogen therapy, rapid weight loss, high-fat diets, and metabolic syndrome.

Pigment Gallstones

Pigment gallstones are composed primarily of bilirubin, a waste product from the breakdown of red blood cells. They account for approximately 20% of gallstones and are further divided into black pigment stones (associated with hemolytic disorders such as sickle cell disease, liver cirrhosis, and aging) and brown pigment stones (associated with biliary infections and bile duct stasis, more common in East Asian populations). Pigment stones tend to be smaller, darker, and more numerous than cholesterol stones.

Symptoms of Gallstones

Most gallstones are "silent" — they reside in the gallbladder without causing any symptoms. When gallstones do produce symptoms, the presentation depends on where the stone is located and whether it is causing obstruction or inflammation.

Biliary Colic

Biliary colic is the hallmark symptom of gallstone disease. It occurs when a gallstone temporarily obstructs the cystic duct (the duct connecting the gallbladder to the common bile duct), causing the gallbladder to contract against the obstruction. Symptoms include:

• Sudden, intense pain in the right upper abdomen or epigastrium — The pain typically comes on quickly, often within 30 minutes of eating (particularly after a fatty meal), and can be severe enough to send patients to the emergency room.
• Pain radiating to the right shoulder or back — The referred pain pattern follows the phrenic nerve distribution and is a classic feature that helps distinguish biliary colic from other causes of abdominal pain.
• Duration of 30 minutes to several hours — Unlike intestinal cramping, biliary colic is a steady, constant pain that gradually builds and then slowly subsides. Episodes lasting longer than 6 hours raise concern for acute cholecystitis.
• Nausea and vomiting — Nausea accompanies biliary colic in the majority of patients, and vomiting is common during severe episodes.

Acute Cholecystitis

Acute cholecystitis occurs when a gallstone becomes persistently lodged in the cystic duct, leading to gallbladder inflammation and, in many cases, secondary bacterial infection. Symptoms include prolonged right upper quadrant pain (lasting more than 6 hours), fever, chills, and tenderness in the right upper abdomen that worsens with deep breathing (Murphy's sign). Acute cholecystitis is a medical emergency that typically requires hospitalization and surgical removal of the gallbladder.

Choledocholithiasis (Bile Duct Stones)

When a gallstone migrates out of the gallbladder and lodges in the common bile duct, it can obstruct the flow of bile from the liver to the intestine. This condition — called choledocholithiasis — can cause jaundice (yellowing of the skin and eyes), dark-colored urine, pale or clay-colored stools, and upper abdominal pain. Bile duct stones are the most common indication for ERCP and, if left untreated, can lead to cholangitis (bile duct infection) or gallstone pancreatitis.

Cholangitis

Ascending cholangitis is a serious, potentially life-threatening infection of the bile duct system that occurs when bacteria ascend into a bile duct obstructed by a gallstone. The classic presentation — known as Charcot's triad — includes fever, jaundice, and right upper quadrant pain. In severe cases, patients may also develop confusion and low blood pressure (Reynolds' pentad), indicating sepsis. Cholangitis requires urgent antibiotic therapy and emergent ERCP to relieve the obstruction.

Causes & Risk Factors

Gallstones form when the chemical balance of bile is disrupted. Bile normally contains enough bile salts and lecithin to keep cholesterol dissolved in solution. When this balance shifts — due to excess cholesterol production, reduced bile salt secretion, or impaired gallbladder motility — conditions become favorable for stone formation. Several well-established risk factors increase the likelihood of developing gallstones.

Non-Modifiable Risk Factors

• Female sex — Women are two to three times more likely than men to develop gallstones, largely due to the effects of estrogen on cholesterol metabolism and bile composition. Estrogen increases hepatic cholesterol secretion and reduces gallbladder motility, both of which promote stone formation.
• Age — The risk of gallstones increases steadily with age. Gallstones are uncommon before age 20 but become increasingly prevalent after age 40. By age 60, approximately 25% of women and 10% of men have gallstones.
• Ethnicity — Gallstone prevalence varies significantly by ethnicity. Native Americans and Hispanic Americans have the highest rates of gallstone disease, while individuals of African descent have lower rates. Genetic factors that influence cholesterol metabolism and bile composition contribute to these differences.
• Family history and genetics — A family history of gallstones approximately doubles an individual's risk. Several genetic variants affecting cholesterol transport proteins (including ABCG5/G8 and LITH genes) have been identified as contributors to hereditary gallstone susceptibility.

Modifiable Risk Factors

• Obesity — Obesity is one of the strongest modifiable risk factors for cholesterol gallstones. Excess body weight increases hepatic cholesterol synthesis and secretion into bile, promotes bile cholesterol supersaturation, and impairs gallbladder motility. The risk increases in proportion to body mass index (BMI).
• Rapid weight loss — Paradoxically, losing weight too quickly (more than 3 pounds per week) significantly increases the risk of gallstone formation. During rapid weight loss, the liver mobilizes large amounts of cholesterol and secretes it into bile, while reduced caloric intake decreases gallbladder emptying. This combination creates ideal conditions for stone formation. Patients undergoing bariatric surgery are at particularly high risk.
• Diet — Diets high in refined carbohydrates, sugar, and saturated fat and low in fiber are associated with increased gallstone risk. Conversely, diets rich in fruits, vegetables, whole grains, and moderate amounts of healthy fats (such as olive oil and nuts) appear to be protective.
• Physical inactivity — Sedentary behavior is independently associated with increased gallstone risk. Regular physical activity promotes gallbladder motility and helps maintain a healthy weight.
• Medications — Certain medications increase gallstone risk, including estrogen-containing oral contraceptives and hormone replacement therapy, cholesterol-lowering fibrate drugs (which increase cholesterol secretion into bile), and octreotide (which reduces gallbladder motility).
• Pregnancy — Pregnancy increases gallstone risk through elevated estrogen and progesterone levels, which affect bile composition and gallbladder motility. Gallstones develop in approximately 5% to 12% of pregnancies, though most are asymptomatic and resolve after delivery.
• Diabetes and metabolic syndrome — Insulin resistance, type 2 diabetes, and metabolic syndrome are associated with increased cholesterol gallstone formation due to their effects on hepatic cholesterol metabolism and gallbladder dysmotility.

How Gallstones Are Diagnosed

The diagnosis of gallstone disease begins with a thorough review of your symptoms, medical history, and physical examination. When gallstones are suspected, imaging studies and laboratory tests are used to confirm the diagnosis, identify the location of stones, and assess for complications.

Abdominal Ultrasound

Transabdominal ultrasound is the first-line imaging test for detecting gallstones in the gallbladder. It is non-invasive, widely available, does not use radiation, and has a sensitivity greater than 95% for detecting gallstones. Ultrasound can also identify signs of cholecystitis (gallbladder wall thickening, pericholecystic fluid) and may detect bile duct dilation, which raises suspicion for choledocholithiasis.

Blood Tests

Laboratory tests play a critical role in assessing for gallstone complications. A comprehensive panel typically includes liver function tests (AST, ALT, alkaline phosphatase, GGT), total and direct bilirubin, complete blood count (to check for elevated white blood cells suggesting infection), and lipase and amylase levels (to evaluate for gallstone pancreatitis). Elevated liver enzymes and bilirubin in the setting of gallstone disease suggest bile duct obstruction.

MRCP (Magnetic Resonance Cholangiopancreatography)

MRCP is a specialized, non-invasive MRI technique that provides detailed images of the bile ducts, pancreatic duct, and surrounding structures. It is the preferred non-invasive test for detecting bile duct stones (choledocholithiasis) and has a sensitivity of approximately 90% to 95%. MRCP is particularly useful when bile duct stones are suspected but ERCP may not be immediately necessary, as it allows diagnostic assessment without the procedural risks of ERCP.

Endoscopic Ultrasound (EUS)

Endoscopic ultrasound combines endoscopy with high-frequency ultrasound imaging to provide exceptionally detailed views of the bile ducts, gallbladder, and pancreas. EUS has the highest sensitivity for detecting small bile duct stones (including those missed by transabdominal ultrasound and MRCP) and is particularly valuable when the clinical suspicion for choledocholithiasis is intermediate and a decision is needed about whether to proceed with therapeutic ERCP.

ERCP

ERCP (endoscopic retrograde cholangiopancreatography) is both a diagnostic and therapeutic procedure. During ERCP, Dr. John passes a specialized endoscope through the mouth and into the duodenum, where a catheter is inserted into the opening of the bile duct. Contrast dye is injected and X-ray images are obtained to visualize the bile duct system. If stones are identified, they can be removed during the same procedure using a balloon or basket extraction technique. ERCP is the gold standard treatment for bile duct stones and is indicated when choledocholithiasis has been confirmed or is strongly suspected.

HIDA Scan (Hepatobiliary Iminodiacetic Acid Scan)

A HIDA scan is a nuclear medicine imaging study that evaluates gallbladder function and the flow of bile. A radioactive tracer is injected intravenously, taken up by the liver, and excreted into bile. The gallbladder's ability to fill and empty is then observed. A HIDA scan is most useful when biliary dyskinesia (impaired gallbladder motility without gallstones) is suspected, particularly in patients with typical biliary symptoms but no stones on ultrasound.

Treatment Options

Treatment for gallstone disease depends on whether the stones are symptomatic, their location (gallbladder versus bile duct), and whether complications have developed. The American College of Gastroenterology (ACG) recommends a tailored approach based on the clinical scenario.

Watchful Waiting (Asymptomatic Gallstones)

The majority of gallstones are discovered incidentally during imaging performed for other reasons. Asymptomatic gallstones — those that have never caused pain, nausea, or complications — generally do not require treatment. The ACG guidelines recommend observation rather than prophylactic cholecystectomy for most patients with incidental, asymptomatic gallstones, as the annual risk of developing symptoms is only 1% to 2%. Exceptions to this approach may include patients with very large gallstones (greater than 3 cm, which carry a higher risk of gallbladder cancer), patients with a porcelain gallbladder (calcification of the gallbladder wall), and certain immunocompromised patients.

ERCP for Bile Duct Stones

When gallstones migrate into the common bile duct (choledocholithiasis), ERCP is the treatment of choice. During this procedure, Dr. John makes a small incision in the opening of the bile duct (sphincterotomy) to widen the passage, then extracts the stones using a balloon catheter or retrieval basket. ERCP is highly effective, with bile duct clearance rates exceeding 90% in experienced hands. For patients with very large or difficult-to-remove stones, additional techniques such as mechanical lithotripsy (crushing the stone) or temporary plastic stent placement may be used. ERCP is typically performed before cholecystectomy in patients who have both bile duct stones and gallbladder stones.

Cholecystectomy (Gallbladder Removal)

Laparoscopic cholecystectomy is the definitive treatment for symptomatic gallstones and is one of the most commonly performed surgical procedures in the United States. The gallbladder is removed through several small incisions using a camera and specialized instruments, allowing most patients to go home the same day and return to normal activities within one to two weeks. Dr. John works closely with experienced surgeons in the Dallas-Fort Worth area to coordinate care for patients who require cholecystectomy, ensuring seamless management from initial diagnosis through surgical intervention and postoperative follow-up.

Medical Dissolution Therapy

For a select group of patients who are not surgical candidates or who prefer to avoid surgery, oral bile acid therapy (ursodeoxycholic acid, also known as ursodiol) can gradually dissolve small cholesterol gallstones over 6 to 24 months. This approach is only effective for small (less than 1 cm), non-calcified cholesterol stones in a functioning gallbladder and has a recurrence rate of approximately 50% within 5 years after discontinuation. Because of these limitations, bile acid dissolution therapy is reserved for carefully selected patients after thorough discussion of the alternatives.

Lifestyle Modifications

While lifestyle changes cannot dissolve existing gallstones, they play an important role in reducing the risk of recurrent stone formation (particularly in patients treated with dissolution therapy) and in overall digestive health. Evidence-based recommendations include maintaining a healthy weight through gradual weight loss (1 to 2 pounds per week), eating a balanced diet rich in fiber and healthy fats, staying physically active, and avoiding prolonged fasting or crash diets.

Frequently Asked Questions