Septic pulmonary emboli

Discussion:

IV heroin injection leads to infected DVT of the lower limb which may fragment and migrate to the right atrium --> right ventricle and then the lungs resulting in septic pulmonary emboli and microabscesses.

The differential includes other cavitary lung nodules e.g. Wegener's granulomatosis, multiple hydatic cysts, necrobiotic nodules and cavitating metastatic deposits.

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