Spontaneous Pneumothorax from Secondary Sarcoma of Lung

CommentThe pre-operative diagnosis of torsion is seldom made; about 80% of cases are diagnosed as appendi- citis, but, considering the duration of symptoms, the patients look less toxic than do cases of appendicitis.The age incidence varies between 35 and 55 years, and the condition is twice as common in males.The three cases reported here were all those of men between 45 and 50.Cases 2 and 3 are examples of secondary torsion, the third case being associated with intraperitoneal adhe- sions, and the second with a right inguinal hernia, though there was no evidence of adhesions between the hernial sac and the omentum.No definite cause was found for torsion in Case 1, which can therefore be grouped as an example of primary or idiopathic torsion.I wish to thank Mr. T. G. I. James for his advice