OBJECTIVE: Prognostic factors of metastatic brain tumors have been widely reported and their operative indications also have been extended gradually even to the poor grade patients. Authors intended to analyze the causative factors for the clinical outcome of metastatic brain tumors, especially with relevant to the poor prognosis by one year follow-up evaluation. PATIENTS AND METHODS: The authors retrospectively studied the clinical characteristics of 46 cases(35 patients) with metastatic brain tumors among 466 cases(437 patients) which were operated on due to the brain tumor, during the period between January 1994 to June 1999. Statistical analysis was performed by using SPSS 8.0(r). A p-value of less than 0.05 was considered clinically significant. RESULT: Among the variable clinical factors in patients with metastatic brain tumors, Karnofsky Performance Scale (KPS) score of less than 70(16 patients), uncontrolled primary tumor(8 patients), and surgical resection without further adjuvant therapy(9 patients) showed statistically significant poor prognosis; p value of 0.002, 0.032, and 0.001, respectively. Other tested variables, such as old age(greater than 65 years; 10 patients), gender(male; 20 patients), type of primary cancer(primary undefined; 6 patients, lung cancer; 15 patients), location(infratentorial; 9 patients, sellar; 5 patients), number of lesion(multiple; 12 patients), and number of operation(multiple craniotomy; 7 patients) were not related to the poor prognosis. CONCLUSIONS: The most common primary site of distant metastasis was lung. The poorer prognosis was highly correlated with various factors including low KPS score(<70), no postoperative adjuvant therapy, and uncontrolled primary tumors.
Brain Neoplasms* ; Brain* ; Craniotomy ; Follow-Up Studies* ; Humans ; Lung ; Lung Neoplasms ; Neoplasm Metastasis ; Prognosis* ; Retrospective Studies

To describe the detailed microsurgical anatomy of the clinoid(C5)segment of the internal carotid artery(ICA) and surrounding structures and clarify the anatomical relationships of this region emphasizing their clinical relevance, authors examined in 70 specimens from 35 formalin fixed cadaveric heads. Removal of the anterior clinoid process exposes the C5 segment of the ICA which is encircled by the thin inner dural layer of the cavernous sinus wall. Opening this membrane enables entrance into a narrow space that communicates with cavernous sinus through the proximal dural ring. Unlike the dura of the distal dural ring that is tightly attached to the ICA, the proximal dural ring is always incompetent. The C5 segment of the ICA has been considered by the majority of authors to be extracavernous. This understanding developed because most investigators overlooked the thin inner dural layer encircling the clinoid ICA. The narrow space between the inner dural layer and the ICA communicates with cavernous sinus through an incompetent proximal dural ring. Therefore, the clinoid ICA should be considered to be the most rostral portion of the cavernous (C4)segment of the ICA. The proximal dural ring is a surgical landmark rather than a true dural ring.
Cadaver ; Carotid Artery, Internal* ; Cavernous Sinus ; Formaldehyde ; Head ; Humans ; Membranes ; Research Personnel

OBJECTIVE: Various lesions including tumors occupying in the presellar and suprasellar regions have been traditionally removed by the transcranial approach. The new modified transsphenoidal approaches(TSAs) have been proposed to avoid the craniotomy and to get better surgical view. MATERIALS AND PATIENTS: The sellar floor and presellar anterior cranial fossa were removed through the sublabial transseptal transsphenoidal technique in the "transsphenoidal supradiaphragmatic intradural approach". One tuberculum sella meningioma and a suprasellar Rathke's cleft cyst confined to the pituitary stalk were removed via this approach. RESULTS: The dissection of the anterior intercavernous sinus, diaphragma sella, and arachnoid membrane allowed a wide surgical field of pre- and suprasellar areas and facilitated a safe removal of lesions without significant surgical complications in our cases. CONCLUSION: From the authors' limited experience, the advantages of this technique are as follows: 1) it can be easily applicable through a minor modification of the standard TSA, 2) excellent anatomical exposure of the structures located in the supradiaphragmatic suprasellar cistern, and 3) might be suitable to remove small lesions located in the presellar and adjacent to the pituitary stalk region.
Arachnoid ; Cranial Fossa, Anterior ; Craniotomy ; Humans ; Membranes ; Meningioma ; Pituitary Gland

No abstract available.
Aneurysm*

No abstract available.
Aneurysm*

No abstract available.
Arteries* ; Intracranial Aneurysm*

No abstract available.
Low Back Pain* ; Sciatica*

PURPOSE: Peritumoral brain edema (PTBE) is a serious causative factor that contributes the morbidity or mortality of brain tumors. The development of PTBE is influenced by many factors, including such tight junction proteins as occludin. We evaluated the PTBE volume and survival time with respect to the occludin expression in various pathological types of brain tumors. MATERIALS AND METHODS: Fresh-frozen specimens from sixty patients who had brain tumors were obtained during surgery and the tumors were confirmed pathologically. The occludin expression was investigated by Western blot analysis. The PTBE volume was measured by using preoperative magnetic resonance (MR) imaging, and the survival time in each patient was estimated retrospectively. RESULTS: Occludin was detected in 41 (68.3%) of the cases with brain tumors and it was not expressed in the other 19 (31.7%) cases. Although the lowest expression was revealed in high-grade gliomas, its expression was variable according to the pathology of the brain tumors (p>0.05). The difference of PTBE volume between occludin-positive and negative brain tumors was statistically significant (2072.46+/-328.73 mm3 vs. 7452.42+/-1504.19 mm3, respectively, p=0.002). The mean survival time was longer in the occludin-positive tumor group than in the occludin-negative group (38.63+/-1.57 months vs. 26.16+/-3.83 months, respectively; p=0.016). CONCLUSIONS: This study suggests that the occludin expression is highly correlated to the development of PTBE in brain tumors and it might be a prognostic indicator for patient survival.
Blotting, Western ; Brain Edema ; Brain Neoplasms* ; Brain* ; Edema* ; Glioma ; Humans ; Mortality ; Occludin* ; Pathology ; Retrospective Studies ; Survival Rate ; Tight Junction Proteins

case of occult intrasacral meningocele associated with arachnoid cyst in a 35-year-male is reported. The patient presented with a history of severe sacrococcygeal pain, constipation, and urinary incontinence for several months. Myelography revealed delayed filling of a meningocele. Computed tomographic(CT) myelography and magnetic resonance(MR) imaging showed huge intrasacral mass without neural elements. A favorable outcome was achieved by decompression of the cyst, obliteration of the conduit to subarachnoid space, and fenestration of arachnoid cyst into subarachnoid space.
Arachnoid* ; Constipation ; Decompression ; Humans ; Meningocele* ; Myelography ; Sacrum ; Subarachnoid Space ; Urinary Incontinence

No abstract available.