Post-CT-guided lung biopsy optimisation of the observation period by identifying patients at risk of delayed pneumothorax.

Introduction: Identify the risk factors for delayed pneumothorax after lung biopsy.

Methods: A retrospective study of 355 CT-guided lung biopsies was performed at Fiona Stanley Hospital, Western Australia over 42 months. A comprehensive range of patient, lesion and procedural variables were recorded.

Merkel cell carcinoma cardiac metastasis causing cardiac tamponade.

We describe an unusual presentation of Merkel cell carcinoma (MCC), a rare neuroendocrine cutaneous tumour. A 59-year-old man presented with a 2-week history of dyspnoea on a background of MCC of the left elbow that was diagnosed after an axillary lymph node metastasis had appeared. He was clinically diagnosed with cardiac tamponade and received urgent pericardiocentesis.