Perforation of a duodenal ulcer during pregnancy is a rare and serious condition which requires urgent treatment to obtain a successful outcome for both mother and foetus. The following case is reported on account of the rarity and importance of the condition, and also because some interesting points occurred during treatment.
AND CONCLUSION ments which facilitate the passage of neoplastic ~~~~~~~~i~ turnours within the spinal dura emboli to the brain rather than the cord. mater or in the cord are rare lesions. cord is not infreauentlv affected bv metastatic REFERENCES Although the tumours, these are-neariy always exGadura1, and compress it from the epidural space for which they have a predilection. The spinal dura is remarkably protective, being very rarely either invaded or penetrated by malignant tUmOUrS lying outside it. difference in the incidence of intracerebral and intramedullary 36, 98.metastases is due to the difference in mass between brain and spinal cord and of the vascular arrange-
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