Different Outcomes of Intractable Temporal Lobe Epilepsy with Regard to the Timing of Surgical Intervention

PURPOSE: We like to examine the clinicopathologic findings of intractable temporal lobe epileptic patients who underwent epilepsy surgery, and different outcomes with regard to the timing of surgical intervention. METHODS: One hundred fourty six patients underwent anterior temporal lobectomy for medically intractable epilepsy between the year of 1993 and 2000. Except 5 patients who had malignancy, 132 patients were included in this study and were followed up for longer than 12 months after surgery. Two groups, under 15 years old(pediatric group) and over(adult group) according to the timing of surgery, were compared with clinical variables(seizure patterns, EEGs and brain MRI findings), pathologic findings and seizure outcomes. Seizure outcomes were divided as favorable in Class I and II or unfavorable in Class III and IV by using Engel's classification. RESULTS: Among 132 patients, 103 patients(78.0%) were classified as favorable and 29 patients(22.0%) unfavorable. Adult group had more favorable outcomes than pediatric group(82.1% vs 55.0%, P=0.007). Pathologic findings were as follows:48 patients(36.4%) had only hippocampal sclerosis, 50(37.9%) hippocampal sclerosis with other pathologic findings, 20(15.2%) cortical dysplasia, 6(4.5%) cortical dysplasia and gliosis, 7(5.3%) only gliosis and 1(0.7%) hippocampal atrophy. Among 98 patients who had hippocampal sclerosis, 81(82.7%) had favorable outcomes. Among 26 patients who had cortical dysplasia, 16(61.5%) had favorable outcomes. In case of hippocampal sclerosis only, pediatric group had more favorable outcomes(85.7% vs 82.9%, P=0.86). But in case of hippocampal sclerosis with other pathologic findings, adult group had more favorable outcomes(50.0% vs 86.4%). In case of cortical dysplasia only, adult group had more favorable outcomes(40.0 % vs 74.3%). CONCLUSION: The seizure outcomes after surgery, pediatric group showed less favorable outcomes than adult group. In case of hippocampal sclerosis only, the outcome of early surgery was good too.

Small Flat Adenocarcinoma of the Colon Arising From Familial Adenomatous Polyposis Patient: Suggesting de novo Origin

Most adenocarcinomas of the colorectum arise in a visible benign precursor lesion, the adenoma, which is a monoclonal proliferation of dysplastic nonmalignant epithelial cells. Adenoma-adenocarcinoma sequence has been represented as the predominat pathogenetic pathway. But a small flat depressed colon cancer is characterized by non-polypoid growth pattem with no association of adenomatous tissues, which has tendency to early submucosal invasion and lymph node metastasis even in very small lesion (<10 mm). It supports de novo carcinogenesis of colorectal cancer, although most colorectal cancerarise in pre-existing adenoma. We report a case of small float colon adenocarcinoma arising in normal colonic epithelium rather than adenomatous polyp in familial adenomatous polyposis syndrome.

Expression of p53, bcl-2 Protein in Colorectal Cancer and Its Relationship to Pathologic Factor

PURPOSE: This study was undertaken to evaluate the correlation between p53, bcl-2 expression and pathologic factors stage, anatomic location, histologic grade, gross pattern, lymph node metastasis of the colorectal cancer. METHODS: Analysis were made on archival pathology tissue of 56 patients with colorectal cancer. The oncoproteins were localized using commerically available monoclonal antibodies : DO-7 for, p53 and clone 124 for bcl-2. RESULTS: P53 protein was detected in 53 out of 56(94.6%) adenocarcinomas of the colorectal cancer and the most frequently expressed patterns of immunoreactivity of p53 were strong in intensity in 40 cases(71.4%) and were diffuse in pattern in 39 cases(69.6%). Bcl-2 protein was detected in 34 out of 56(60.7%) adenocarcinomas of the colorectal cancer and the most frequently expressed patterns of immunoreactivity of bcl-2 were weak in intensity in 17 cases(30.3%) and were diffuse in pattern in 16 cases(28.6%). There was no correlation between p53, bcl-2 expression and Dukes' stage, anatomic location ,histologic grade, gross pattern of tumor, lymph node metastasis of the colorectal cancer. CONCLUSION: 53 mutation and bcl-2 expression are frequent event in human colorectal carcinoma as shown in this study, but p53 and bcl-2 protein expression is not significant independent predicator of aggressiveness and progression of colorectal cancers.