Haemolytic Transfusion Reaction Due to an Anti-Lewisa Agglutinin

MEDIC JOURNAL obstruction of the bronchi, with distension of the peripheral alveoli.These distended alveoli might sub- sequently rupture direct through the visceral pleura or into the interstitial spaces.In the latter case the air may then track aJong intrapulmonary tissue planes to the mediastinum, or pzripherally to the subp'eural surface, when blebs may form and subsequently rupture.The rare occurrence of spontaneous pneumothorax in association with metastatic tumours of the lung is some- what surprising, as lung necrosis is a conspicuous feature in such cases, and pleural perforation might be expected more commonly.Certainly few such cases have been recorded.I wish to thank Dr.