Sarcoidosis is a multisystemic disease of unknown etiology that can involve lungs, abdominal organs, and lymph nodes. The incidence of sarcoidosis is highest between the ages of 20 and 40 years, and it affects both sexes equally. The most frequent localization is in the lungs, and about half of the affected patients are generally asymptomatic but can involve in small percentages of various other parts such as the biliary tract, pancreas, stomach, and urinary tract. Hepatic and splenic localization is infrequent, and lesions are often mistaken for metastases due to their morphologic similarity. The histological lesion of sarcoidosis is a noncaseous granuloma always associated with high levels of angiotensin-converting enzyme, hypercalcemia, hypercalciuria, and, in a significant percentage of cases (35%-40%), liver enzyme alteration. The pathological evolution of granulomas is fibrosis, and the most severe cases of hepatic sarcoidosis can develop into cirrhosis or portal hypertension. Imaging is essential for lesion localization and is represented by ultrasound, computed tomography (CT), magnetic resonance imaging, and positron emission tomography/CT. The differential diagnosis is very difficult and is almost always histological. We describe a case of hepatic sarcoidosis in an asymptomatic patient with elevated liver enzymes.
Keywords: Computed tomography; hepatic sarcoidosis; magnetic resonance imaging; sarcoidosis; ultrasound.
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