Symptoms to Diagnosis

A woman, age 35, with new-onset ascites

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A 35-year-old woman is admitted to the hospital with a 5-day history of abdominal distention and jaundice. She reports no history of fever, chills, night sweats, abdominal pain, nausea, vomiting, diarrhea, changes in urine color, change in stool color, weight loss, weight gain, or loss of appetite.

She is petite, with a body mass index of 19.4 kg/m2. She has no known history of medical conditions or surgery and is not taking any medications. Her family history is unremarkable, and she denies current or past tobacco, alcohol, or illicit drug use.

RECENT TRAVEL

She says that during a trip to Central America several months ago, she had suffered a seizure and was taken to a local hospital, where laboratory testing revealed elevated aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels. She says that the rest of the workup at that time was normal.

About 1 week after that incident, she returned home and saw her primary care physician, who ordered further testing, which showed mild hyperbilirubinemia and mild elevation of AST and ALT levels. Her physician attributed the elevations to atovaquone, which she had been taking for malaria prophylaxis, as repeat testing 2 weeks later showed improvement in AST and ALT levels.

The patient says she returned to her normal state of health until about 5 days ago, when she noticed jaundice and abdominal distention, but without abdominal pain, dark urine, or clay-colored stools. She became concerned and went to her local hospital. Testing there noted mild elevation of AST and ALT, as well as an elevated international normalized ratio (INR) and hyperbilirubinemia. Computed tomography of the abdomen and pelvis showed hepatomegaly with possible fatty liver. Because of these results, the patient was transferred to our institution for further evaluation.

EVALUATION AT OUR INSTITUTION

On examination at our institution, she is afebrile, and vital signs are within normal ranges. She has bilateral scleral icterus and diffuse jaundice, but no other skin finding such as rash or spider angioma. She has no lymphadenopathy. Her abdomen is distended, with tense ascites, and her liver is tender to palpation. The tip of the spleen is not palpable.

Table 1. Results of initial laboratory testing

The cardiovascular examination reveals no murmurs, rubs, or gallops, but she has jugular venous distention and +2 pitting edema of both lower extremities.

On respiratory examination, there is dullness to percussion, with slight crackles on auscultation at the right lung base. The neurologic examination is normal.

Table 1 shows the results of initial laboratory testing.

1. Which study would provide the most information on the cause of ascites?

  • Abdominal ultrasonography
  • Abdominal paracentesis with ascitic fluid analysis
  • Chest radiography
  • Echocardiography
  • Urine protein-to-creatinine ratio

Abdominal paracentesis with ascitic fluid analysis is the essential study for any patient with clinically apparent new-onset ascites.1–3 It is the study that provides the most information on the cause of ascites.

In our patient, abdominal paracentesis yields 1,000 mL of straw-colored ascitic fluid, and analysis shows 86 nucleated cells, 28 of which are polymorphonuclear cells, and 0 red blood cells, with negative Gram stain and culture. The ascitic albumin level is 0.85 g/dL, with an ascitic protein of 1.1 g/dL.

Abdominal ultrasonography shows a diffusely echogenic liver, no focal lesions, moderate ascites, normal portal vein flow, no intrahepatic or extrahepatic biliary duct dilation, normal kidney sizes, no hydronephrosis, and no intra-abdominal mass. Chest radiography is clear with no sign of consolidation, edema, or effusion. Echocardiography shows a normal left ventricular ejection fraction with no valvular disease or pericardial effusion. A random urine protein-creatinine ratio is normal at 0.1 (reference range < 0.2).

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