A 75-year-old woman presented to the infectious diseases clinic with a 10-day history of painful lesions on the right hand and forearm. An aspiration of the hand lesion was performed. Bacterial culture of the aspirate grew filamentous, gram-positive, acid-fast branching rods. Which of the following activities likely preceded development of the lesions?
一名75岁女性因右手和前臂病变疼痛10日到传染病门诊就诊。对手部病变进行抽吸。抽吸物的细菌培养显示出丝状、革兰阳性、抗酸的分枝杆菌。下列哪项活动可能先于病变发生?
A. Cleaning a fish tank
B. Gardening
C. Getting bitten by a sandfly
D. Handling feline waste
E. Petting an armadillo
答案解析：
这个结节最初出现在她的手背，是她在园艺时被刺穿的地方。皮损沿红色条纹向上蔓延，然后出现在前臂。培养结果随后被鉴定为巴西诺卡菌，并被诊断为孢子丝菌结节性淋巴管炎。经过一个疗程的甲氧苄啶-磺胺甲恶唑治疗后，病变消退。
正确答案：B
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