51.有關子宮頸癌的敘述，下列何者正確？
(A)子宮頸癌是無法預防的
(B)子宮頸癌的形成是由於人類乳突病毒的感染，和其他感染如披衣菌完全無關
(C)子宮頸癌被認為是後天免疫缺乏症候群的疾病之一
(D)感染人類乳突病毒後即可獲得免疫，不會再感染同型病毒

When the patient is known HIV positive, and the CD4 count is less than 200 cells/µL, or an AIDS-defining illness is present, this is considered pathognomonic for the diagnosis of AIDS.  There are several AIDS-defining illnesses that in and of themselves suggest a severely immunocompromised state when HIV-positive:

• Pulmonary or disseminated TB
• Invasive cervical cancer
• Esophageal candidiasis
• Cryptococcosis
• Cryptosporidiosis
• CMV retinitis, or infection outside of the liver, spleen, or lymph nodes
• HSV – chronic ulcers, bronchitis, pneumonitis, or esophagitis
• Kaposi sarcoma
• Pruritic popular eruption of HIV
• Lymphoma – Burkitt’s or primary brain
• Mycobacterium avium complex, disseminated or extrapulmonary
• PCP pneumonia
• Progressive multifocal leukoencephalopathy
• Brain toxoplasmosis
• HSV encephalitis
• HIV wasting syndrome
• Disseminated histoplasmosis
• Isosporiasis
• Recurrent salmonella septicemia
• Recurrent bacterial pneumonia