Abstract
The case of a 35-year old man who presented with massive left sided haemothorax as a complication of an asymtomatic pancreatic pseudocyst is descibed. The diagnosis was confirmed by very high amylase content of the pleural fluid. The complications of pancreatitis and pancreatic pseudocyst are also briefly discussed. Haemothorax represents an unusual pulmonary complication of pseudocyst pancreas and should be considered in the differential diagnosis of pleural fluid collection in pancreatitis.