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| A 33-year old male who has sex with males and females presents with weight loss and recurrent diarrhea. On examination, there are several purple nodules in the oral cavity and on the arms and legs. CD4 cell count is less than 200 and the Western Blot test is positive. |
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| A 23-year old male presents with a lesion on his penis. On examination, there is a yellow painful ulcer on the shaft of the penis. Tissue culture grows H. ducreyi. |
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| A 63-year old male presents with a penile discharge. On examination, the discharge is mucoid and clear. |
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| A 23-year old female presents with a vaginal discharge and dysuria. On examination, there is a thick purulent discharge issuing from the cervical os. Microscopic examination of the discharge shows numerous Gram negative intracellular diplococci. |
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| A 25-year old female presents with a genital lesion. On examination, there is a painless beef-red ulcer on the labia majora. Culture of the lesion grows Calymmatobacterium granulomatis. |
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| A 35-year old female presents with recurrent genital ulcers. On examination, there are a number of small shallow yellow ulcers on the labia minora. |
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| A 31-year old male presents with numerous lesions in his penis. On examination, there are multiple fleshy cauliflower-like warts on the glans penis. |
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| A 21-year old female presents with draining sores in her groin. On examination, there are a number of painful suppurating buboes in the groin. Serological tests show antibodies to Chlamydia trachomatis type L1. |
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| A 76-year old male presents with a rash all over his body and lumps in the neck and armpits. On examination, there is a maculopapular rash on the trunk and generalized lymphadenopathy. The VDRL and FTA-abs tests are positive. |
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