EN
The aim of the study was the evaluation of the usefulness of fine-needle aspiration biopsy (FNAB) performed under USG control in diagnosing lung diseases in dogs. The study entailed 25 dogs of different breed, size and sex, aged 2-13 years. The experiment was divided into 2 stages: post mortem examination (stage I - 10 dogs) and intravital examination (stage II - 15 dogs). Fine-needle aspiration biopsy was performed using needles of 0.9 mm diameter and 80 mm long. At stage II, in 13 cases the cytological material from the lungs collected by means of fine-needle aspiration biopsy was sufficient and its evaluation enabled the final diagnosis. Only in 2 cases was the material collected from lungs was inadequate and the cytological smears were non diagnostic. The cytological evaluation of the smears from the lungs in the dogs allowed the diagnosis of the following: lung abscesses - 2 cases, pneumonia - 7 cases and lung tumors - 4 cases. Based on the conducted research it was proved that fine-needle aspiration biopsy (FNA) is a safe and useful technique in diagnosing lung diseases in dogs. Moreover, when neoplastic changes of the lungs are suspected FNAB should be considered as the basic diagnostic technique.