A 22-year-old woman presents for an annual physical examination with no significant complaints but reports irregular menstrual cycles and occasional acne breakouts. Physical Examination: Vital signs are stable. Pelvic exam is unremarkable. The patient is counseled on preventive health screenings, including cervical cancer screening. Concerned about cervical cancer, she asks about its most common cause. Question: What is the most common cause of cervical cancer?
