input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 25-year-old woman presents to her primary care provider for evaluation of a "painful mass in my left groin." She says that her symptoms began 4 days ago as a painful mass that slowly enlarged, ruptured, and ulcerated. However, she denies fever, chills, dysuria, or hematuria. Three weeks prior to her current symptoms she noted a small, painless ulcer on her labium majorum that resolved after a few days. She admits to having unprotected sex with a male partner a month ago while she was traveling in Southeast Asia. Temperature is 99°F (37.2°C), blood pressure is 139/84 mmHg, pulse is 76/min, and respirations are 18/min. Physical examination is significant for left-sided, tender, ulcerative lymph nodes with a dark discoloration. Which of the following is most likely to be seen in this patient's condition?   (A) Gram-negative rods in school of fish formation on Gram stain   (B) PCR positive for Chlamydia trachomatis   (C) Positive RPR, VDRL, and FTA-ABS   (D) Tzanck smear with multinucleated giant cells
output: ['(B) PCR positive for Chlamydia trachomatis <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Gram-negative rods in school of fish formation on Gram stain  (B) PCR positive for Chlamydia trachomatis  (C) Positive RPR, VDRL, and FTA-ABS  (D) Tzanck smear with multinucleated giant cells <> possible answers', '  A 25-year-old woman presents to her primary care provider for evaluation of a "painful mass in my left groin." She says that her symptoms began 4 days ago as a painful mass that slowly enlarged, ruptured, and ulcerated. However, she denies fever, chills, dysuria, or hematuria. Three weeks prior to her current symptoms she noted a small, painless ulcer on her labium majorum that resolved after a few days. She admits to having unprotected sex with a male partner a month ago while she was traveling in Southeast Asia. Temperature is 99°F (37.2°C), blood pressure is 139/84 mmHg, pulse is 76/min, and respirations are 18/min. Physical examination is significant for left-sided, tender, ulcerative lymph nodes with a dark discoloration. Which of the following is most likely to be seen in this patient\'s condition? <> context']