Which choice is NOT a sign of sexual abuse?

Rationale:
A. Pericardial effusion is the accumulation of fluid in the pericardial sac surrounding the heart, not in the pleural cavity.
B. Parapneumonic pleural effusion is fluid that accumulates in the pleural space secondary to pneumonia; it is usually serous, purulent, or bloody but not specifically lymphatic.
C. Pleural empyema is pus in the pleural space, typically resulting from infection, not lymphatic fluid.
D. Chylothorax is the accumulation of lymphatic fluid (chyle) in the pleural cavity, usually due to trauma, obstruction, or congenital malformation of the thoracic duct. It is characterized by a milky appearance and high triglyceride content.

Rationale:
A. Testing 1–2 weeks after starting therapy is premature, as the full course of antibiotics has not yet been completed, and results may not accurately reflect treatment effectiveness.
B. One week after completion of nitrofurantoin therapy is recommended to assess the resolution of bacteriuria and confirm the effectiveness of treatment for acute cystitis in pregnant adolescents. This timing allows any remaining bacteria to be detected while minimizing false negatives.
C. Testing after 10 days of therapy initiation may still be during treatment, which is too early to confirm eradication.
D. Waiting 2 weeks after completion of therapy is not necessary; 1 week post-treatment is sufficient to evaluate effectiveness and ensure prompt follow-up.