False-positive liver scan due to ascites. 1985

M G Velchik

Extrahepatic structures (breast, costal margin, kidney, pleural effusion, right lower lobe lung mass) may occasionally result in a false-positive liver scan by causing attenuation of the gamma rays emenating from the liver, thereby simulating an apparent intrahepatic lesion. A false-positive diagnosis of intrahepatic pathology may often be avoided by simple maneuvers such as elevating the breast, obtaining another projection, etc. A case of false-positive liver scan due to loculated ascites is presented in which these maneuvers failed to resolve the problem. Ultrasound or CT examination may be helpful in this circumstance due to the cross-sectional nature of the information they provide.

UI MeSH Term Description Entries
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008107 Liver Diseases Pathological processes of the LIVER. Liver Dysfunction,Disease, Liver,Diseases, Liver,Dysfunction, Liver,Dysfunctions, Liver,Liver Disease,Liver Dysfunctions
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011877 Radionuclide Imaging The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph. Gamma Camera Imaging,Radioisotope Scanning,Scanning, Radioisotope,Scintigraphy,Scintiphotography,Imaging, Gamma Camera,Imaging, Radionuclide
D005189 False Positive Reactions Positive test results in subjects who do not possess the attribute for which the test is conducted. The labeling of healthy persons as diseased when screening in the detection of disease. (Last, A Dictionary of Epidemiology, 2d ed) False Positive Reaction,Positive Reaction, False,Positive Reactions, False,Reaction, False Positive,Reactions, False Positive
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001201 Ascites Accumulation or retention of free fluid within the peritoneal cavity.

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