Bronchioloalveolar carcinoma is an exceptional morphological case of adenocarcinoma, compiling 3-9% of primary lung cancer. Its growth is characterized by spread of neoplastic cells in the peripheral air space without destroying underlying architecture. Carcinoma is spreading by blood vessels and alveoles. Bronchioloalveolar carcinoma distinguishes itself by variety of clinical and radiological symptoms. During the radiological researches separates consolidating infiltration and solitary types. They manifest by unequal density which can be in 30% incorrectly valuing as bronchopneumonia. The aim of our work is to analyze confirmed cases of bronchioloalveolar carcinoma and to summarize definite characteristic radiological signs, which can help to diagnose bronchioloalveolar carcinoma.