[Masqued lesions of the lung in children (author's transl)]

Masqued findings of the lung in children can cause grave diagnostic errors. A gamut list of typical pseudodiagnoses is given. Relevant cases are demonstrated as questions and answers. Practical hints how to reach a correct diagnosis are outlined. It is pointed out that initial standard films frequently have to be complemented by special views to avoid false judgements, which could be harmful to the patient.