CT guided thoracic (lung) biopsy is a everyday important procedure undertaken in clinical radiology departments.

The majority of biopsies are in those with presumed lung cancer, although a wider spectrum of pathologies in both the lung and mediastinum may be biopsied.

Technique and a measured approach is key.   The procedure is not without complication, the chief and most frequent being pneumothorax.

This case guides the unfamiliar in a step-by-step manner how to undertake the procedure.