Parasitic infections of the lung occur worldwide among both immunocompetent and immunocompromised patients and may affect the respiratory system in a variety of ways. This review provides an update on the presenting symptoms, signs, investigation and management of diseases affecting the lung caused by protozoa, nematodes and trematodes. The clinical presentations and radiographic findings of several of these diseases may mimic tuberculosis and malignancy. It is important to consider parasitic infections in the differential diagnosis of such lung diseases. If identified early, most parasitic diseases that affect the lung are curable with medical or surgical treatments.

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The options open to them will be explained by the personnel officer of the district and may include secondment to a more supervised post for the remainder of this man's contract. It is most important for the registrar to realise that he is not alone in this dilemma. Many of us have faced it and I have had to persuade both doctors and paramedical staff to reconsider their career plans in the light of such findings of incompetence. The decision may be a difficult