A pathognomonic sign or symptom has very high sensitivity : for example it can sometimes be absent in a certain disease, since the term only implies that, when it is present, the doctor instantly knows the patient's illness.
42.
As opposed to symptoms ( reported subjectively by the patient and not measured ) and signs ( observed by the physician at the bedside on physical exam, without need for a report ) a larger number of medical test results are pathognomonic.
43.
More often a test result is " pathognomonic " only because there has been a consensus to define the disease state in terms of the test result ( such as diabetes mellitus being defined in terms of chronic fasting blood glucose levels ).
44.
"' Negri bodies "'are eosinophilic, sharply outlined, pathognomonic inclusion bodies ( 2 10 �m in diameter ) found in the cytoplasm of certain nerve cells containing the virus of rabies, especially in Ammon's horn of the hippocampus.
45.
Research on eye-movement abnormalities and the abnormal behavior of the pupils was widely researched at that time on both sides of the Atlantic Ocean as strong candidates for pathognomonic findings that could be discerned through a routine neurological examination that could confirm a diagnosis of Dementia praecox
46.
Contrary to what is the case in CJD, there were no cases with a positive 14-3-3 protein test in the cerebrospinal fluid, no periodic complexes on electroencephalography ( EEG ), and no pathognomonic changes on diffusion-weighted magnetic resonance images.
47.
Hypersegmented neutrophils have classically been thought to be pathognomonic of the class of anemias called megaloblastic anemias ( anemias caused by failure of bone marrow blood-forming cells to make DNA, often caused by vitamin B 12 or folate deficiencies, or DNA-replication poisons ).
48.
The researchers described theropod phalanges as being " pathognomonic " for stress fractures, this means they are " characteristic and unequivocal diagnostically . " Rothschild and the other researchers examined and dismissed other kinds of injury and sickness as causes of the lesions they found on the dinosaurs'bones.
49.
The pathognomonic finding is subnormal serum activity of the TNSALP enzyme, which is caused by one of 200 genetic mutations identified to date, in the gene encoding TNSALP . Genetic inheritance is autosomal recessive for the perinatal and infantile forms but either autosomal recessive or autosomal dominant in the milder forms.
50.
The histomorphological appearance of ballooning degeneration is not pathognomonic for steatohepatitis, but usage of the term is generally confined to the condition, i . e . in the context of other histopathological findings the label " ballooning degeneration " is not used for cell death with cytoplasmic clearing and cell swelling.
