A normal abdominal ultrasound is reassuring, especially for many visible abnormalities of the liver, gallbladder, kidneys, spleen, and major abdominal structures. But it does not explain every cause of left upper abdominal pain, and it does not rule out all conditions.
Possible causes despite a normal ultrasound
Pain under the left ribs or in the left upper abdomen may come from:
- Stomach or acid-related problems: acidity, gastritis, peptic ulcer, indigestion, reflux. Pain may relate to meals, burning, nausea, belching, or use of painkillers such as ibuprofen/diclofenac.
- Gas or bowel-related pain: constipation, trapped gas, irritable bowel syndrome, or colonic spasm. This may fluctuate and improve after passing stool or gas.
- Muscle, rib, or chest-wall pain: pain after lifting, coughing, exercise, awkward posture, or injury. It is often worse with movement, twisting, deep breathing, or pressing on the spot.
- Pancreatic disease: ultrasound can have limited views of the pancreas because bowel gas may obscure it. Significant pancreatic pain is usually severe and may go through to the back, with vomiting.
- Left kidney/urinary causes: pain is more often toward the side or back, possibly with urine burning, blood in urine, fever, or urinary frequency. A urine test may help.
- Less commonly, spleen-related or chest causes: spleen enlargement is usually visible on ultrasound, but sudden severe pain after trauma or pain with breathlessness needs urgent assessment. The medical text notes that splenic enlargement can cause left upper-quadrant pain, while splenic infarction may cause pain that radiates to the left shoulder. In this case, a normal ultrasound makes enlargement less likely.
Ultrasound is useful for abdominal organs, but it is not the best test for the stomach lining, bowel gas-related conditions, ribs/muscles, or some pancreatic and intestinal problems.
MedlinePlus explains that abdominal ultrasound evaluates organs such as the liver, gallbladder, pancreas, and kidneys.
What to do next
Arrange a review with a clinician, particularly if the pain persists beyond a few days, keeps recurring, or affects eating or sleep. They may consider:
- Examination of the abdomen, ribs, spine, and chest
- Blood tests such as CBC, liver tests, kidney function, and possibly lipase if pancreatic pain is suspected
- Urine routine examination
- Acid-reducing treatment or testing for H. pylori if symptoms suggest gastritis/ulcer
- CT scan, upper endoscopy, ECG, or chest evaluation only if the history and examination indicate it
Keep a short symptom record: exact location, severity, relation to food, bowel motions, movement, deep breathing, urine symptoms, fever, nausea/vomiting, and medicines used. This helps identify the cause.
Seek urgent medical care now if there is
- Sudden severe or steadily worsening pain
- Fever, repeated vomiting, a rigid/swollen abdomen, fainting, or marked weakness
- Blood in vomit, black stools, or blood in stool/urine
- Chest pain, shortness of breath, sweating, or pain spreading to shoulder, back, arm, or jaw
- Pain after an injury or fall
- Unintentional weight loss, loss of appetite, or persistent worsening symptoms
A normal scan is good news, but persistent left upper abdominal pain still deserves a clinical examination rather than assuming it is harmless.