The incubation period is 5-14 days, and the severity of disease resulting from infection ranges from inapparent
to severe systemic disease accompanied by pneumonia.
Like many other infectious diseases, dengue infection follows an unpredictable clinical evolution, ranging from inapparent
or mild fever to severe or fatal hemorrhagic disease (9).
Spindle cell nevus: slender cells with fusiform nuclei, delicate nuclear chromatin, and inapparent
nucleoli; no mitoses are found Spindle cell melanoma(*) Spindle A: slender cells with a thin oval nucleus, indistinct nucleoli, and often a longitudinal fold in the nuclear membrane Spindle B: larger plumper nuclei with sharply defined, round nucleoli Mixed cell melanoma: both spindle and epithelioid cells present Epithelioid cell melanoma(*): larger, more pleomorphic, polygonal cells with large, sometimes multiple nucleoli (*) Spindle cell melanomas have the most favorable prognosis and epithelioid cell melanomas the least favorable in terms of survival.
Transmission of hepatitis C virus (HCV) and other bloodborne viruses between household members who are not sex partners presumably results from inapparent
percutaneous or permucosal exposures, such as sharing articles that may be contaminated with microscopic quantities of blood.
This lesion was grossly inapparent
and was embedded in the large fibrotic periductal areas.
All anti-HCV-positive persons should be considered potentially infectious; however, neither the presence of antibody nor the presence of HCV RNA is a direct measure of infectivity in settings where inapparent
parenteral or mucosal exposures occur.
Although the infection in adult animals causes only mild symptoms (1) or remains clinically inapparent
, in pregnant animals, transplacental transmission during a limited period can lead to the birth of severely malformed progeny (1,2).
This percentage increases to 15% to 20% of cases if immunohistochemistry (IHC) is used[24-28]; however, the prognostic significance of a histologically inapparent
focus detected only by IHC is still controversial.
Although the precise mode of tranmission is unknown, she had direct contact with her son's urine and feces; because of his chronic gastritis and duodenitis, some blood could have been present in his feces, even though the blood was inapparent
to his mother.
Thus, these infections were biochemically inapparent
While precise measurement may be impossible on nonpalpable, grossly inapparent
lesions, the pathologist should estimate the size or extent of DCIS and include this in the report.
Editorial Note: In this report, more than half the children had clinically inapparent
cases of lead poisoning; nearly all were identified as a result of routine screening of children that had been initiated in California in late November 1991.