Resection of suprasellar meningioma through interhemispheric approach.

The present study aims to discuss the value and the effect of resection of suprasellar meningioma through the interhemispheric approach. Twenty-nine cases of patients with suprasellar meningioma diagnosed through enhanced magnetic resonance imaging scans and postoperative histopathologic examination underwent resection of tumors (the largest diameter ranged from 3 cm to 6 cm) by the microsurgical technique of small bone window (about 5 cm × 6 cm) through the interhemispheric approach. Among all cases, 25 (86%) (Simpson I, II) were of total resection of tumors and 4 were of subtotal resection of tumors. Moreover, along all cases, 19 were of improved vision and view, 2 of postoperative diabetes insipidus, and 1 of electrolyte imbalance. No operative death occurred. The small bone window interhemispheric approach can be used to expose tumors, lightly stretch brain tissues, reduce the incidence of complications, and improve the total resection rate of tumors of patients with sellae meningiomas growing forward, upward, and into the sella.

Twenty-nine cases of resection of suprasellar meningioma through small bone window: an interhemispheric approach.

AIM OF THE STUDY: The present study aims to discuss the value and the effect of resection of suprasellar meningioma through the interhemispheric approach. MATERIAL AND METHODS: Twenty-nine cases of patients with suprasellar meningioma diagnosed through enhanced magnetic resonance imaging (MRI) scans and postoperative histopathological examination underwent resection of tumours (the largest diameter ranged from 3 cm to 6 cm) by the microsurgical technique of a small bone window (about 4 cm × 5 cm) through the interhemispheric approach. RESULTS: Among all cases, 25 (86%) (Simpson I, II) were of total resection of tumours and 4 were of subtotal resection of tumours. 19 (65%) were of improvement of vision and visual field, 2 (7%) were of postoperative diabetes insipidus, and 1 (3%) was of electrolyte imbalance. No operative death occurred. CONCLUSIONS: The small bone window interhemispheric approach can be used to expose tumours, lightly stretch brain tissues, reduce the incidence of complications, and improve the total resection rate of tumours of patients with sellae meningiomas growing forward, upward, and into the sella.

Effect of erythrocytes on brain water content and haem oxygenase-1 expression in rats with traumatic intracerebral haemorrhage.

BACKGROUND: Studies have demonstrated that brain oedema formation following spontaneous intracerebral haemorrhage is associated with substances derived from blood clots or blood components. However, these studies did not completely reveal the role of blood components in brain oedema formation following traumatic intracerebral haemorrhage (TICH). Here, we explore the role of erythrocytes in brain oedema development by studying the effect of erythrocytes on brain water content (BWC) and expression of haem oxygenase-1 (HO-1) in rats with TICH. METHODS: A total of 120 Sprague-Dawley rats were randomly divided into four experimental treatment groups: traumatic brain injury (TBI), TBI plus whole blood (WB), TBI plus lysed red blood cells (RBCs; LRBC) and TBI plus packed RBCs (PRBC). Following TBI, which was established by applying a free-falling device, WB, LRBC or PRBC were infused with stereotactic guidance into the injured cortex to produce a model of TICH. All rats were killed at 1, 3 or 5 days after TBI or TICH. BWC was measured, and immunohistochemistry for HO-1 was performed. RESULTS: In the WB, PRBC and TBI groups, BWC at 3 days post-TBI or post-TICH was the greatest. However, BWC in the LRBC group at 1 day was markedly higher than that at 3 and 5 days. Comparisons among the four groups showed that BWC in the LRBC group was the highest at 1 day, and the highest at 3 days in the WB and PRBC groups; there was no significant difference at 5 days. Positive expression of HO-1 in the WB, PRBC and LRBC groups coincided with changes in BWC. CONCLUSIONS: Our results indicate that erythrocytes play an important role in delayed brain oedema formation (3 days post-injury) following TICH, but have no significant influence on brain oedema at early stages (1 day post-injury), and that the mechanisms of delayed brain oedema involve RBC breakdown products.