Exam 22: Nonmalignant Lymphocyte Disorders

A 5-year-old patient is suspected of having infectious mononucleosis. The patient's blood smear reveals 55% reactive lymphocytes and a WBC count of 15 × 10⁹/L. The heterophile antibody test is negative. IgG and IgM antibodies to EBV both come back positive. What is the best explanation for these results?

An unknown patient blood sample on an adult has the following results: WBC count = 9.5 × 10⁹/L with 70% lymphocytes. What term describes this condition? Name a disease in which this is seen.

Which of the following is an expected finding regarding the morphology of an activated lymphocyte that is different from a normal lymphocyte?

What clinical condition does the Centers for Disease Control and Prevention include in its case definition for HIV infection?

Compare and contrast X-linked SCID and autosomal SCID.

A 42-year-old HIV-positive patient recently was diagnosed with disseminated histoplasmosis. Which of the following should be ordered to monitor this patient's progression?

Which of the following is expected to decrease as the HIV infection progresses into AIDS?

All of the following are expected findings of AIDS except:

Newborns infected with CMV exhibit all of the following except:

The prominent lymphocytosis in whooping cough is the result of:

A negative heterophile antibody test in a patient with symptoms of infectious mononucleosis could be caused by what factor if the patient is being treated for cancer?

Which of the following cell types is commonly infected by the HIV-1 virus?

An 18-year old patient has a WBC count of 9 × 10⁹/L and 60% lymphs, 30% neutrophils, 6% monocytes, 3% eosinophils, and 1% basophils. The following that best describe this condition are:

Which of the following is used as a screening test for infectious mononucleosis?

Name five hematologic findings associated with HIV infections other than lymphocytopenia.