SUMMARY A 34 year old woman with a history of self-mutilation developed severe constrictive pericarditis with sterile, calcified intrapericardial abscess cavities as a result of inserting sewing needles into her chest seven years previously. After pericardiectomy she made a good recovery.In peacetime needles are the most common foreign bodies found in the pericardial sac, whereas bullets and shrapnel become more common in times of war.' In the nineteenth century it became fashionable to attempt suicide by driving a long pin, needle, or skewer into the heart. Admiral Villineuve who commanded the French fleet at Trafalgar was taken prisoner by the English. After his release he returned to Rennes from where he sent a message to Napoleon announcing his return to French soil. Suffering from guilt and depression, and failing to receive a reply from Napoleon, whom he knew to be more than a little displeased, he killed himself by driving a long needle six times into his heart. In 1868 Fischer described 452 patients wounded in the heart or great vessels and showed that such wounds were not always fatal.2 He recorded 319 penetrating wounds, mainly stab and gunshot, but 44 were puncture wounds. Of these, 28 were caused by various types of needles and only 10 patients survived the initial injury.In 1899 Loison reported a further series of 61 penetrating injuries; in 23 cases these were caused by needles. Some of these patients were symptomless while others died suddenly for unknown reasons.3 Fourteen (61 %) died; eight of haemorrhage with tamponade, and one of infection. In five the cause of death was not known.