Lau L S, Bannan E, Tress B
Neuroradiology. 1984;26(1):67-9. doi: 10.1007/BF00328209.
Two patients were scanned 2-5 weeks following onset of subarachnoid haemorrhage. A similar CT appearance was seen in each case. A ring enhancing mass lesion was present within the corpus callosum, suggesting an underlying tumour. However subsequent angiography showed that each case was in fact due to rupture of a pericallosal artery aneurysm. The enhancing membrane of the haematoma gave the false impression of a corpus callosum tumour.
两名患者在蛛网膜下腔出血发作后2 - 5周接受了扫描。每个病例都有相似的CT表现。胼胝体内出现一个环形强化肿块病变，提示存在潜在肿瘤。然而，随后的血管造影显示，每个病例实际上是由于胼周动脉瘤破裂所致。血肿的强化包膜给人造成了胼胝体肿瘤的假象。
